tips help dropped screws. and high quality 1/4 inch quick-change shank fits drill chucks impact drivers adapters extensions and bit holders. Material: S2 Steel. Heat-treated and tempered S2 tool steel absorbs resists twisting and cam-out for life. Color: as the picture shown It is useful to operate electronic device for electrician mechanic and work. Please allow 1-5mm errors due to manual measurement. 50mm total length 1/4 inch hex shank 6mm PH2 head tip S2 steel screwdriver bits. 10pcs x Screwdriver Bit Item color displayed in photos may be showing slightly different on your computer since monitors are not calibrated same. -grade power tool accessory for larger head fasteners.