Power Tool Bits Set Insex 1.5, 2, 2.5, 3mm

Material: HSS (Ti-Coated) Straight Hex: 1.5, 2, 2.5 & 3mm Length: 100mm Hex Dimension: 6.35mm (1/4") Note that the smaller ones can be prone to brake if you dont use the tool at a straight angle Suitable for: Straight Hex 1.5mm: For M3 electric motor pinion grub screws (most 1/10 - some larger pinions use a M4 screw that needs an straight 2mm) Straight Hex 2.0mm: For M3 hex screws with countersunk head or button-head Straight Hex 2.5mm: For M3 hex screws with allen head (cylindrical) and M4 hex screws with countersunk head or button-head Straight Hex 3.0mm: For M4 hex screws with allen head or M5 with countersunk head & M5 with a button head