Wera 784B/1 3/8" Square Drive to 1/4" Hex Screwdriver Bit Holder

The Wera 784B/1 is a 3/8" square drive to 1/4" hex screwdriver bit holder, designed to convert a 3/8" square drive ratchet or socket wrench for use with standard 1/4" hexagon shank screwdriver bits.

The adaptor features a quick-release chuck for rapid bit changes without interrupting workflow — ideal for tradespeople switching between fastener types on site. The 1/4" hexagon drive conforms to DIN ISO 1173-C 6.3, ensuring compatibility with a wide range of standard screwdriver bits, including those from Wera's connecting series 1.

A ball stop groove is incorporated into the design to provide secure retention within the socket drive, reducing the risk of the adaptor working loose during use. This makes the 784B/1 a practical addition to any socket set where screwdriving capability is needed alongside conventional socket work.

Features and Benefits:
• Converts 3/8" square drive to 1/4" hex for screwdriver bit use
• Quick-release chuck for fast, efficient bit changes
• Conforms to DIN ISO 1173-C 6.3 for broad bit compatibility
• Ball stop groove ensures secure retention in the socket drive
• Compatible with Wera connecting series 1 bits

Specifications:
Drive: 3/8" square
Bit connection: 1/4" hexagon (DIN ISO 1173-C 6.3)
Length: 43mm

Contents:
784 B/1 x 1/4" x 43mm adaptor with quick-release chuck