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SK PROFESSIONAL TOOLS Socket Wrench Set: 3/8 in Drive, 21 Piece, 6-Point, SAE - SAE Socket Sets with Drive Tools
SK PROFESSIONAL TOOLSSAE Socket Sets with Drive Tools

SK PROFESSIONAL TOOLS Socket Wrench Set: 3/8 in Drive, 21 Piece, 6-Point, SAE

The SK PROFESSIONAL TOOLS Socket Wrench Set (MPN 4521) is a 21-piece SAE socket set with drive tools, featuring a 3/8 in drive and a 7.6 in fixed, round head ratchet. The set includes deep sockets ranging from 1/4 in…

SKU 3G-OTH-303703

Brand
SK PROFESSIONAL TOOLS
Item
Socket Wrench Set: 3/8 in Drive, 21 Piece, 6-Point, SAE
Category
SAE Socket Sets with Drive Tools
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Technical Specifications

SK PROFESSIONAL TOOLS
Manufacturer Part Number
4521
Type
6-Point, SAE, 1/4 in to 7/8 in
Piece
21
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SK PROFESSIONAL TOOLS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SK PROFESSIONAL TOOLS Socket Wrench Set (MPN 4521) is a 21-piece SAE socket set with drive tools, featuring a 3/8 in drive and a 7.6 in fixed, round head ratchet. The set includes deep sockets ranging from 1/4 in to 7/8 in, with a friction ball retaining system. Socket bits and wrenches are not included.

Frequently Asked Questions

What is the SK PROFESSIONAL TOOLS 4521 socket wrench set used for?

The SK PROFESSIONAL TOOLS 4521 socket wrench set is used for tightening and loosening SAE fasteners in automotive repair, industrial maintenance, and mechanical assembly. It includes a 3/8 in drive, 21 pieces, deep sockets from 1/4 in to 7/8 in, and a 7.6 in fixed round head ratchet with a friction ball retaining system.

What are the specifications of the SK PROFESSIONAL TOOLS 4521 socket set?

The SK PROFESSIONAL TOOLS 4521 socket set has a 3/8 in drive, includes 21 pieces with deep SAE sockets ranging from 1/4 in to 7/8 in, and a 7.6 in fixed round head ratchet. It uses a friction ball retaining system. Socket bits and wrenches are not included. The set is not thin-wall.

Where to buy SK PROFESSIONAL TOOLS 4521 worldwide?

You can source the SK PROFESSIONAL TOOLS 4521 socket wrench set worldwide through 3G Electric. As a global industrial equipment distributor, 3G Electric handles full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to maintain the SK PROFESSIONAL TOOLS 4521 ratchet?

To maintain the SK PROFESSIONAL TOOLS 4521 ratchet, keep it clean and lightly lubricate the friction ball mechanism periodically. Avoid using excessive force beyond the tool's rated capacity. Store the set in a dry environment to prevent corrosion. For repairs, consult the manufacturer's guidelines.

Used in

Common applications for SK PROFESSIONAL TOOLS
Automotive repair — SK PROFESSIONAL TOOLS 3/8" drive SAE sockets for engine and transmission work
Industrial maintenance — SK PROFESSIONAL TOOLS 1/2" drive metric sockets for machinery bolt tightening
Field service — SK PROFESSIONAL TOOLS flex extensions for accessing fasteners in tight spaces
Assembly lines — SK PROFESSIONAL TOOLS combination wrenches for torque-controlled fastener installation
Facility repair — SK PROFESSIONAL TOOLS deep sockets for recessed nut and bolt applications

SK PROFESSIONAL TOOLS Products

3G Electric supplies SK PROFESSIONAL TOOLS sae socket sets with drive tools. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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SK PROFESSIONAL TOOLS Socket Wrench Set: 3/8 in Drive, 22 Piece, 6-Point, Metric (MPN 91820). Key specifications — attr1224269: 3/8 in; attr1204638: Drive Tools Included; attr1204650: 10 mm to 19 mm; attr1204658: 7.6 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS
SK PROFESSIONAL TOOLS Socket Wrench Set: 3/8 in Drive, 22 Piece, 6-Point, Metric (MPN 91820). Key specifications — attr1224269: 3/8 in; attr1204638: Drive Tools Included; attr1204650: 10 mm to 19 mm; attr1204658: 7.6 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS Socket Wrench Set: 3/8 in Drive, 49 Piece, 6-Point, Metric/SAE (MPN 94549). Key specifications — attr1224269: 3/8 in; attr1204638: Drive Tools Included; attr1204650: 1/4 in to 7/8 in; attr1204658: 7.6 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS
SK PROFESSIONAL TOOLS Socket Wrench Set: 3/8 in Drive, 49 Piece, 6-Point, Metric/SAE (MPN 94549). Key specifications — attr1224269: 3/8 in; attr1204638: Drive Tools Included; attr1204650: 1/4 in to 7/8 in; attr1204658: 7.6 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS Socket Wrench Set: 3/8 in Drive, 47 Piece, 12-Point, Metric/SAE (MPN 94547-12). Key specifications — attr1224269: 3/8 in; attr1204638: Drive Tools Included; attr1204650: 6 mm to19 mm; attr1204658: 7.6 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS
SK PROFESSIONAL TOOLS Socket Wrench Set: 3/8 in Drive, 47 Piece, 12-Point, Metric/SAE (MPN 94547-12). Key specifications — attr1224269: 3/8 in; attr1204638: Drive Tools Included; attr1204650: 6 mm to19 mm; attr1204658: 7.6 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS Socket Wrench Set: 1/2 in Drive, 47 Piece, 12-Point, Metric/SAE (MPN 4147). Key specifications — attr1224269: 1/2 in; attr1204638: Drive Tools Included; attr1204650: 10 mm to 24 mm; attr1204658: 10.3 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS
SK PROFESSIONAL TOOLS Socket Wrench Set: 1/2 in Drive, 47 Piece, 12-Point, Metric/SAE (MPN 4147). Key specifications — attr1224269: 1/2 in; attr1204638: Drive Tools Included; attr1204650: 10 mm to 24 mm; attr1204658: 10.3 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.

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SK PROFESSIONAL TOOLS Socket Wrench Set: 1/2 in Drive, 16 Piece, 12-Point, SAE, 7/16 in to 1 1/4 in (MPN 4116). Key specifications — attr1224269: 1/2 in; attr1204638: Drive Tools Included; attr1204650: 7/16 in to 1-1/4 in; attr1204658: 10.3 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
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SK PROFESSIONAL TOOLS Socket Wrench Set: 1/2 in Drive, 16 Piece, 12-Point, SAE, 7/16 in to 1 1/4 in (MPN 4116). Key specifications — attr1224269: 1/2 in; attr1204638: Drive Tools Included; attr1204650: 7/16 in to 1-1/4 in; attr1204658: 10.3 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS Socket Wrench Set: 1/4 in Drive, 22 Piece, 12-Point, SAE, 1/4 in to 9/16 in (MPN 4952). Key specifications — attr1224269: 1/4 in; attr1204638: Drive Tools Included; attr1204650: 1/4 in to 9/16 in; attr1204658: 4.5 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS
SK PROFESSIONAL TOOLS Socket Wrench Set: 1/4 in Drive, 22 Piece, 12-Point, SAE, 1/4 in to 9/16 in (MPN 4952). Key specifications — attr1224269: 1/4 in; attr1204638: Drive Tools Included; attr1204650: 1/4 in to 9/16 in; attr1204658: 4.5 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS Socket Wrench Set: 1/4 in Drive, 21 Piece, 6-Point, SAE, 3/16 in to 1/2 in (MPN 4921). Key specifications — attr1224269: 1/4 in; attr1204638: Drive Tools Included; attr1204650: 3/16 in to 1/2 in; attr1204658: 4.5 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS
SK PROFESSIONAL TOOLS Socket Wrench Set: 1/4 in Drive, 21 Piece, 6-Point, SAE, 3/16 in to 1/2 in (MPN 4921). Key specifications — attr1224269: 1/4 in; attr1204638: Drive Tools Included; attr1204650: 3/16 in to 1/2 in; attr1204658: 4.5 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS Socket Wrench Set: 3/8 in Drive, 32 Piece, 6-Point, SAE, 1/4 in to 1 in (MPN 4532). Key specifications — attr1224269: 3/8 in; attr1204638: Drive Tools Included; attr1204650: 1/4 in to 1 in; attr1204658: 7.6 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS
SK PROFESSIONAL TOOLS Socket Wrench Set: 3/8 in Drive, 32 Piece, 6-Point, SAE, 1/4 in to 1 in (MPN 4532). Key specifications — attr1224269: 3/8 in; attr1204638: Drive Tools Included; attr1204650: 1/4 in to 1 in; attr1204658: 7.6 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS Socket Wrench Set: 1/2 in Drive, 28 Piece, 6-Point, SAE, 3/8 in to 1 1/4 in (MPN 4128-6). Key specifications — attr1224269: 1/2 in; attr1204638: Drive Tools Included; attr1204650: 3/8 in to 1-1/4 in; attr1204658: 10.3 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS
SK PROFESSIONAL TOOLS Socket Wrench Set: 1/2 in Drive, 28 Piece, 6-Point, SAE, 3/8 in to 1 1/4 in (MPN 4128-6). Key specifications — attr1224269: 1/2 in; attr1204638: Drive Tools Included; attr1204650: 3/8 in to 1-1/4 in; attr1204658: 10.3 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS Socket Wrench Set: 1/2 in Drive, 23 Piece, 12-Point, SAE, 7/16 in to 1 1/4 in (MPN 4123). Key specifications — attr1224269: 1/2 in; attr1204638: Drive Tools Included; attr1204650: 7/16 in to 1-1/4 in; attr1204658: 10.3 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS
SK PROFESSIONAL TOOLS Socket Wrench Set: 1/2 in Drive, 23 Piece, 12-Point, SAE, 7/16 in to 1 1/4 in (MPN 4123). Key specifications — attr1224269: 1/2 in; attr1204638: Drive Tools Included; attr1204650: 7/16 in to 1-1/4 in; attr1204658: 10.3 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS Socket Wrench Set: 3/8 in Drive, 21 Piece, 12-Point, SAE, 1/4 in to 7/8 in (MPN 4551). Key specifications — attr1224269: 3/8 in; attr1204638: Drive Tools Included; attr1204650: 1/4 in to 7/8 in; attr1204658: 7.6 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS
SK PROFESSIONAL TOOLS Socket Wrench Set: 3/8 in Drive, 21 Piece, 12-Point, SAE, 1/4 in to 7/8 in (MPN 4551). Key specifications — attr1224269: 3/8 in; attr1204638: Drive Tools Included; attr1204650: 1/4 in to 7/8 in; attr1204658: 7.6 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS Socket Wrench Set: 1/2 in Drive, 40 Piece, 12-Point, SAE, 3/8 in to 1 1/2 in (MPN 4140). Key specifications — attr1224269: 1/2 in; attr1204638: Drive Tools Included; attr1204650: 3/8 in to 1-1/2 in; attr1204658: 15 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.
SK PROFESSIONAL TOOLS
SK PROFESSIONAL TOOLS Socket Wrench Set: 1/2 in Drive, 40 Piece, 12-Point, SAE, 3/8 in to 1 1/2 in (MPN 4140). Key specifications — attr1224269: 1/2 in; attr1204638: Drive Tools Included; attr1204650: 3/8 in to 1-1/2 in; attr1204658: 15 in Fixed, Round Head Ratchet; attr1204673: Socket Bits Not Included; attr1204681: Wrenches Not Included; attr1204688: SK PROFESSIONAL TOOLS; attr1224230: Friction.