SP Air Corporation SP-1764 1/4-Inch Super Fast Mini Impact Ratchet Wrench Exhibits full performance even in a restricted area Single dog clutch impact mechanism with rear air exhaust at base of handle Durable aluminum housing and protective head cover - Metal Housing Cap Sold Separately as item # 760A-100 Reaction free while still providing high speed and high torque Durable and high quality construction expertly made In Japan