12 Piece mechanic's screwdriver set

DURABLE: These mechanic's screwdrivers have hardened, tempered heat treated steel blades with magnetic tips. VERSATILE: The set contains 6 slotted and 6 Phillips screwdrivers with a go-through design with a hex bolster for use with wrench or socket for increased torque. CARRY CASE: The set is supplied in a sturdy, blow moulded plastic storage case.