Specifications: Drive Size: 1/2" Bolt Specification: M16 Free Speed: 7,000RPM Average Air Consumption:3.2CFM /90PSI Air Inlet: 1/4" Air Pressure: 90PSI(6.3kg/㎡) Features: - Die cast aluminum body - Easy adjustable power regulator, high torque - Long life, low noise - Ideal for changing tire and general assembling work and other workshops