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PROTO Combination Wrench: Alloy Steel, Satin, 21 mm Head Size, 11 3/4 in Overall Lg - Metric 12-Point Combination Wrenches
PROTOMetric 12-Point Combination Wrenches

PROTO Combination Wrench: Alloy Steel, Satin, 21 mm Head Size, 11 3/4 in Overall Lg

The PROTO J1221MASD is a metric 12-point combination wrench made from alloy steel with a satin finish. It features a 21 mm head size and an 11 3/4 in overall length with an offset design. This PROTO wrench is a…

SKU 3G-OTH-300017

Brand
PROTO
Item
Combination Wrench: Alloy Steel, Satin, 21 mm Head Size, 11 3/4 in Overall Lg
Category
Metric 12-Point Combination Wrenches
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Technical Specifications

PROTO
Manufacturer Part Number
J1221MASD
Type
Satin, Offset
Overall Lg
11 3/4 in
Head Size
21 mm
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PROTO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The PROTO J1221MASD is a metric 12-point combination wrench made from alloy steel with a satin finish. It features a 21 mm head size and an 11 3/4 in overall length with an offset design. This PROTO wrench is a 12-point combination type.

Frequently Asked Questions

What is the PROTO J1221MASD combination wrench used for?

The PROTO J1221MASD is a metric 12-point combination wrench used for tightening and loosening fasteners in industrial maintenance, automotive repair, and mechanical assembly. Its 21 mm head size and offset design provide access to recessed bolts. The alloy steel construction and satin finish offer durability and corrosion resistance.

What are the specifications of the PROTO J1221MASD wrench?

The PROTO J1221MASD is a metric 12-point combination wrench with a 21 mm head size and an 11 3/4 in overall length. It features an offset design and is made from alloy steel with a satin finish. The manufacturer part number is J1221MASD, and it is a PROTO-branded tool.

Where to buy the PROTO J1221MASD wrench worldwide?

You can source the PROTO J1221MASD combination wrench worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We supply PROTO tools to industrial buyers globally.

How to select the right PROTO combination wrench size?

To select the correct PROTO combination wrench, match the wrench size to the fastener head dimension. For metric fasteners, use a 21 mm wrench like the J1221MASD for a 21 mm bolt head. Ensure the 12-point design fits square or hex fasteners. The offset design helps clear obstructions in tight spaces.

Used in

Common applications for PROTO
Automotive assembly — PROTO J72102 impact socket set for fastening lug nuts on production lines
Heavy equipment maintenance — PROTO J3772T flare nut wrench for hydraulic line fittings on excavators
General industrial repair — PROTO J795SA adjustable wrench set for tightening bolts on conveyor systems
Aerospace manufacturing — PROTO J5240A slotted bit socket for adjusting fasteners in confined spaces
Oil and gas pipeline work — PROTO J5438 12-point socket for valve assembly in refineries
Construction site toolkits — PROTO J8179-T500 double box wrench for structural steel bolting

PROTO Products

3G Electric supplies PROTO metric 12-point combination wrenches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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