Proto J7121 1/2 Square Extension 7/16 Hex

Product Description

The Proto J7121 1/2 Square Extension 7/16 Hex is a reliable tool made by Stanley Proto. This extension is crafted from forged steel and stamped with the size for easy identification. It features a ball detent but is not designed for impact applications.

• Made of forged steel
• Size stamped for easy identification
• Ball detent

Product Highlights

This tool from Proto is suitable for various hand tool extensions and drives. It ensures precise fastener engagement and longevity.

Product Information

Standard Information

• Brand: Proto
• Model / MPN: J7121
• Category: Adapters & Extensions
• Manufacturer: Stanley Proto

Technical Specifications

• Material: Alloy Steel
• Finish: Black Oxide
• Overall Length: 2 3/4 inches
• Input Drive Size: 7/16 inches
• Output Drive Size: 1/2 inches
• Input Drive Shape: Hex
• Output Drive Shape: Square
• Standards: ANSI B107.1, Federal Specification GGG-W-660A