For 1/4" hexagon standard bits (6.35mm). Steel screws stick to magnetised bit which facilitates positioning of the screws.
Specifications:
Mounting: 1/4" (C6.3mm)
Mounting: 1/4" (E6.3mm)
Tool Type: Screwdriver Handle
Length of tip: 100mm
Total length: 210mm
Proxxon 22282 1/4" Quick-Change Bit Screwdriver With Spring Sleeve
Proxxon 22283 Combination bit/socket screwdriver 1/4"