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Apex 1/2 inch drive 3 inch socket extension oiled steel finish

Apex

Apex EX-508-3 1/2" Drive 3 in Extension Oiled

SKU CH-VTT8-DQQ7E

A 3-inch steel extension for 1/2" drive sockets with pin lock and oiled finish

  • Product colorTransparent
  • Extends reach in tight spaces with 3 in overall length
  • Fits 1/2" drive sockets via female square x male square design
  • Pin lock system secures socket during use
  • Durable steel construction withstands rigorous applications
  • Meets ASME B107.2 standard for reliable performance

1/2" Drive 3-Inch Socket Extension

The Apex EX-508-3 extends the reach of a 1/2" drive ratchet by three inches. A female square input and male square output accept standard 1/2" sockets and drive tools. A pin-lock mechanism holds the socket securely during use. The tool is built from steel with an oiled finish for corrosion resistance.

SAE Standard and ASME B107.2 Compliance

This extension follows SAE dimensional standards and meets ASME B107.2 performance requirements for hand sockets and drive tools. The standard governs dimensions, hardness and proof-load testing for square-drive attachments. Conformance ensures the extension fits correctly and withstands the torque loads defined for 1/2" drive systems.

Three-Inch Reach for Confined Fasteners

The 3-inch overall length determines whether the extension can bridge the gap between the ratchet and a recessed bolt or nut. Shorter or longer extensions exist for tighter clearances or deeper cavities. Buyers needing significantly more reach or a stubbier profile should select a different length.

How it compares

Measured against everything we stock in Ratchets, Sockets & Drive Tools, at today’s prices. Recalculated every night.

Price $21.99
Typical for this category: the median of 418 items is $20.99.

Specifications

Product
Brand nameAPEX TOOL GROUP
Product colorTransparent

Questions about this item

How do I choose the right Apex extension length for my 1/2" drive set?

The EX-508-3 adds three inches of reach, ideal for deep bolts where a standard ratchet cannot fit; pair it with other lengths for full coverage.

What does the 3-inch overall length mean when the extension is attached to my ratchet?

It moves the socket three inches farther from the handle, letting you reach recessed fasteners without binding the ratchet head against surrounding parts.

How does the 1/2" square drive and pin-lock system perform under torque?

The female-to-male square drive meets ASME B107.2, and the pin lock holds the socket securely so it will not detach during high-torque applications.

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