# Proto® J7121 Extension Socket Adapter, Black Oxide, Hex x Male Square Drive, 7/16 x 1/2 in Male Drive, Male x Male Adapter

**Brand:** [PROTO](https://dev.maxsupplyco.com/brands/PROTO)
**SKU:** J7121-12970
**MPN:** J7121
**Price:** $9.33 · in stock
**URL:** https://dev.maxsupplyco.com/product/proto-j7121

## Features

- Size stamped on tool for easy identification
- Ball detent design
- Not for use on impact applications
- 1 pc construction ensures concentricity
- Special heat treat ensures long life
- Precision machined tips for proper fastener engagement

## Specifications

| Spec | Value |
|---|---|
| UPC | 662679340155 |
| Brands | PROTO |
| Width (in) | 0.5 |
| Height (in) | 0.5 |
| Length (in) | 2.8 |
| Manufacturer | Stanley Black & Decker |
| Package Quantity | 1/Each |
| Manufacturer Part Number | J7121 |

## Description

Proto® extension socket adapter, measurement system: imperial, hex x male square drive, 7/16 x 1/2 in male drive, 2-3/4 in OAL, male x male adapter, ANSI B107.1, federal GGG-W-641E, forged steel, black oxide.

Features

- Size stamped on tool for easy identification

- Ball detent design

- Not for use on impact applications

- 1 pc construction ensures concentricity

- Special heat treat ensures long life

- Precision machined tips for proper fastener engagement