GearWrench 8921 21 Piece 3/8-Inch Drive (20mm) Metric Pass Thru Ratchet Set
The Gear Ratchet handle quickly converts to a conventional 1/4-Inch or 3/8-Inch ratchet for standard sockets by using the two included adapters. "Pass through" socket system eliminates the need for deep sockets. The Vortex thin wall socket design has the same torque strength as an ordinary socket. Over all height is reduced by as much as 50-Percent, width by 20-Percent. The unique Gear Ratchet drive configuration increases torque strength by as much as 40-Percent and needs as little as 5º or arc. Chrome vanadium steel. Fully hardened. Features fine tooth 5º ratchet handle.