ITEM NAME:12pcs/set Magnetic Screwdriver S2 Steel Phillips Electric Screw Driver Bits #gib Store Home Promotion Hot Item Add to Fav.High alloy steel S2, whole induction hardening, wear. Usage: Screws can be screwed with electric screwdriver or manual tool. Head anti-skid texture can better occlude nuts and avoid skidding. 12 X Screwdriver Bits.