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PROTO Master Set: 1,398 Total Pcs, Metric/SAE - Tool Only Sets
PROTOTool Only Sets

PROTO Master Set: 1,398 Total Pcs, Metric/SAE

The PROTO Master Set (SKU 409JY3, MPN JCS-1300MAS) is a tool-only set comprising 1,398 total pieces in Metric/SAE sizes, with socket drive sizes of 1/2 in, 1/4 in, 3/4 in, and 3/8 in. This set includes (2) Needle…

SKU 3G-OTH-267234

Brand
PROTO
Item
Master Set: 1,398 Total Pcs, Metric/SAE
Category
Tool Only Sets
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Technical Specifications

PROTO
Manufacturer Part Number
JCS-1300MAS
Type
Metric/SAE, 1/2 in/1/4 in/3/4 in/3/8 in Socket Drive Size
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PROTO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The PROTO Master Set (SKU 409JY3, MPN JCS-1300MAS) is a tool-only set comprising 1,398 total pieces in Metric/SAE sizes, with socket drive sizes of 1/2 in, 1/4 in, 3/4 in, and 3/8 in. This set includes (2) Needle Nose Pliers, (19) Nut Drivers, (14) Torx Bit Sockets, and (7) Flex Combo Wrenches.

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 tool only sets. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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PROTO Combination Wrench Set: Alloy Steel, Chrome, 11 Tools, 3/8 in to 1 in Range of Head Sizes (MPN J1200H11T5). Key specifications — attr309520: Chrome; attr309519: Alloy Steel; attr324929: PROTO; attr309522: No; attr309533: Yes.
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PROTO Combination Wrench Set: Alloy Steel, Chrome, 11 Tools, 3/8 in to 1 in Range of Head Sizes (MPN J1200H11T5). Key specifications — attr309520: Chrome; attr309519: Alloy Steel; attr324929: PROTO; attr309522: No; attr309533: Yes.
PROTO Combination Wrench Set: Alloy Steel, Satin, 26 Tools, 1/4 in to 2 in Range of Head Sizes (MPN J1200-80ASD). Key specifications — attr309520: Satin; attr309519: Alloy Steel; attr324929: PROTO; attr309512: Tool Roll; attr309522: No; attr309533: Yes.
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PROTO Combination Wrench Set: Alloy Steel, Satin, 15 Tools, 7 mm to 21 mm Range of Head Sizes (MPN J1200F-MASD). Key specifications — attr309520: Satin; attr309519: Alloy Steel; attr324929: PROTO; attr309512: Canvas Pouch; attr309522: No; attr309533: Yes.
PROTO Combination Wrench Set: Alloy Steel, Chrome, 14 Tools, 1/4 in to 1 in Range of Head Sizes, Std (MPN JSCRT-14S). Key specifications — attr309581: Chrome; attr309580: Alloy Steel; attr309571: No; attr309583: No; attr309587: Yes; attr324931: PROTO; attr309569: 1/4 in to 1 in; attr309572: Tool Roll.
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PROTO Combination Wrench Set: Alloy Steel, Chrome, 14 Tools, 1/4 in to 1 in Range of Head Sizes, Std (MPN JSCRT-14S). Key specifications — attr309581: Chrome; attr309580: Alloy Steel; attr309571: No; attr309583: No; attr309587: Yes; attr324931: PROTO; attr309569: 1/4 in to 1 in; attr309572: Tool Roll.
PROTO Combination Wrench Set: Alloy Steel, Satin, 10 Tools, 10 mm to 19 mm Range of Head Sizes (MPN J1200K-MASD). Key specifications — attr309520: Satin; attr309519: Alloy Steel; attr324929: PROTO; attr309512: Canvas Pouch; attr309522: No; attr309533: Yes.
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PROTO Combination Wrench Set: Alloy Steel, Satin, 10 Tools, 10 mm to 19 mm Range of Head Sizes (MPN J1200K-MASD). Key specifications — attr309520: Satin; attr309519: Alloy Steel; attr324929: PROTO; attr309512: Canvas Pouch; attr309522: No; attr309533: Yes.
PROTO Combination Wrench Set: Alloy Steel, Satin, 7 Tools, 3/8 in to 3/4 in Range of Head Sizes, SAE (MPN J1200HASD). Key specifications — attr309520: Satin; attr309519: Alloy Steel; attr324929: PROTO; attr309512: Tool Roll; attr309522: No; attr309533: Yes.
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PROTO Combination Wrench Set: Alloy Steel, Satin, 7 Tools, 3/8 in to 3/4 in Range of Head Sizes, SAE (MPN J1200HASD). Key specifications — attr309520: Satin; attr309519: Alloy Steel; attr324929: PROTO; attr309512: Tool Roll; attr309522: No; attr309533: Yes.

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PROTO Master Tool Set: 739 Total Pcs, Metric/SAE, 1/2 in/1/4 in/3/4 in/3/8 in Socket Drive Size (MPN JCS-0700MASBX1A). Key specifications — attr538253: PROTO; attr548973: (3) Groove Joint Pliers; attr548974: (8) Phillips Screwdrivers; attr548975: (1) Drag Link Socket; attr548983: (37) Combination Wrenches.
PROTO Master Tool Set: 111 Total Pcs, Drivers and Bits/Sockets and Accessories/Wrenches, Metric (MPN J99570). Key specifications — attr538253: PROTO; attr548973: None; attr548974: (9) Hex Keys; attr548975: (73) Sockets; attr548983: (18) Combination Wrenches.
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PROTO Master Set: 246 Total Pcs, Metric/SAE, 1/4 in/3/8 in Socket Drive Size (MPN JCS-MAS-1A). Key specifications — attr538253: PROTO; attr548973: (1) Needle Nose Plier; attr548974: (5) Cabinet Screwdrivers; attr548975: (38) Bit Sockets; attr548983: (3) Adjustable Wrenches.
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PROTO Master Set: 246 Total Pcs, Metric/SAE, 1/4 in/3/8 in Socket Drive Size (MPN JCS-MAS-1A). Key specifications — attr538253: PROTO; attr548973: (1) Needle Nose Plier; attr548974: (5) Cabinet Screwdrivers; attr548975: (38) Bit Sockets; attr548983: (3) Adjustable Wrenches.
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PROTO Master Set: 1,011 Total Pcs, Metric/SAE, 1/2 in/1/4 in/3/4 in/3/8 in Socket Drive Size (MPN JCS-0900MAS). Key specifications — attr538253: PROTO; attr548973: (1) Bent Nose Plier; attr548974: (6) Keystone Screwdrivers; attr548975: (108) Impact Sockets; attr548983: (7) Flex Combo Wrenches.
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PROTO Master Set: 1,011 Total Pcs, Metric/SAE, 1/2 in/1/4 in/3/4 in/3/8 in Socket Drive Size (MPN JCS-0900MAS). Key specifications — attr538253: PROTO; attr548973: (1) Bent Nose Plier; attr548974: (6) Keystone Screwdrivers; attr548975: (108) Impact Sockets; attr548983: (7) Flex Combo Wrenches.
PROTO Master Set: 1,184 Total Pcs, Metric/SAE, 1/2 in/1/4 in/3/4 in/3/8 in Socket Drive Size (MPN JCS-1100MAS). Key specifications — attr538253: PROTO; attr548973: (1) Electrician's Plier; attr548974: (6) Mini Screwdrivers; attr548975: (108) Impact Sockets; attr548983: (7) Flex Combo Wrenches.
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PROTO Master Set: 1,184 Total Pcs, Metric/SAE, 1/2 in/1/4 in/3/4 in/3/8 in Socket Drive Size (MPN JCS-1100MAS). Key specifications — attr538253: PROTO; attr548973: (1) Electrician's Plier; attr548974: (6) Mini Screwdrivers; attr548975: (108) Impact Sockets; attr548983: (7) Flex Combo Wrenches.
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