uxcell 10x Magnetic 50mm Long 1/4" Shank 4mm PH1 Phillips Screwdriver Bits Product Name : Screwdriver Bit;Tip Type : Phillips Tip Size : PH1, 4mm Dia.;Shank Size : 6.35mm / 1/4" (Hex) Overall Length : 50mm / 2";Color : Gray Material : S2 Steel;Total Weight : 106g Package Content : 10 Pcs x Screwdriver Bits