Compatible with Wera Magnetic Universal Bit Holder (Wera product code: 05134480001). The Wera 800/4 Z Slotted 50 mm Screwdriver Bits 1/4" Hexagon Drive use a standard 1/4" hexagon drive (for 1/4" socket head screwdrivers) and are from their tough Z range of screwdriver bits.
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