Power Tool Bits Set Insex 2+2.5 & Mutter 5.5+7mm

Material: HSS (Ti-Coated) Straight Hex: 2 & 2.5mm Nut drivers: 5.5 & 7mm Length: 100mm Hex Dimension: 6.35mm (1/4") Suitable for: Straight Hex 2.0mm: M3 hex screws with countersunk- or button-head Straight Hex 2.5mm: M3 hex screws with allen head (cylindrical) and M4 hex screws with countersunk head or button-head Nut Driver 5.5mm: M3 nuts Nut Driver 7.0mm: M4 nuts