uxcell&reg; Spare Parts 6.3mm Hex Shank 50mm Length 4mm Hexagon Tip Screwdriver Bits 10 Pcs Product Name : Screwdriver Bit;Features : Hex Head;Bit Size : 4mm/ 0.16" Hex Shank Size : 6.3mm/ 1/4";Total Length : Total Length 50mm/ 2" : 50mm/ 2";Material : Metal Color : Gray;Total Weight : 106g Package Content : Package Content;10 Pcs x Screwdriver Bits : 10 Pcs x Screwdriver Bits