uxcell 4mm Hardware Part Magnetic Phillips PH1 Type Screwdriver Bits 10 Pcs Product Name : Phillips Screwdriver Bit;Tip Type : Phillips PH1 Tip Size : 4mm / 0.16";Drive Shaft Dia : 4.5mm/0.18" Total Length : 100mm / 3.9";Color : Silvery Gray Material : Metal;Weight : 160g Package Content : 10 x Phillips Screwdriver Bit