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PROTO Socket Extension: 3/4 in Input Drive Size, 3/4 in Output Drive Size, 4 in Overall Lg - 3/4" Drive Hand Socket Extensions
PROTO3/4" Drive Hand Socket Extensions

PROTO Socket Extension: 3/4 in Input Drive Size, 3/4 in Output Drive Size, 4 in Overall Lg

The PROTO J5660 is a 3/4" Drive Hand Socket Extension with 3/4" input and output drive sizes and a 4" overall length. It features a Chrome finish and is Not Insulated, with Locking Not Included. This PROTO-branded…

SKU 3G-OTH-317327

Brand
PROTO
Item
Socket Extension: 3/4 in Input Drive Size, 3/4 in Output Drive Size, 4 in Overall Lg
Category
3/4" Drive Hand Socket Extensions
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Technical Specifications

PROTO
Manufacturer Part Number
J5660
Type
Chrome
Overall Lg
4 in
Output Drive Size
3/4 in
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PROTO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The PROTO J5660 is a 3/4" Drive Hand Socket Extension with 3/4" input and output drive sizes and a 4" overall length. It features a Chrome finish and is Not Insulated, with Locking Not Included. This PROTO-branded extension is designed for industrial socket-driving applications.

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 3/4" drive hand socket extensions. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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PROTO Socket Extension: 1/4 in Input Drive Size, 1/4 in Output Drive Size, 10 in Overall Lg, Chrome (MPN J4762). Key specifications — attr1204978: Not Insulated; attr1204980: Locking Not Included; attr1204984: PROTO; attr1204970: Chrome.
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PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 17 3/16 in Overall Lg (MPN J5263). Key specifications — attr1204978: Not Insulated; attr1204980: Locking Not Included; attr1204984: PROTO; attr1204970: Chrome.
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