Professional 1 In. Air Impact Wrench 4500RPM Long Shank 1" Long Impact Wrench Square Drive: 1"; Free Speed: 4500 RPM; Max Torque: 1900FT/LB; 2500N.M Air Cons: 36CFM @ 90PSI; Air Inlet: 1/2"NPT Mechanism: One Hammer (Rocking Dog); Included: 1.25" (32mm) & 1.30" (33mm) Sockets Quantity: 1; Storage Case Dim: 26'' x 11'' x 6-1/4''