Specifications: Rated Pressure: 175 Psi (1.16Mpa) Driving Power: 4Kw (5.5Hp) Pump Speed: 800Rpm Cylinder Diameter: 3.54″ (90mm) Distance Of Screw Hole: 26cm14cm (10.2″5.5) Rated Exhaust Volume: 0.6L/Min Note: If The Motor Speed Is 2880rpm, The Diameter Of The Motor Wheel Is 10 Cm. If The Motor Speed Is 1440rpm, The Motor Wheel Is 20 Cm Features: High Efficiency, High Precision, Universal, Low Energy Consumption. High Quality Material, Not Easy To Damage. Strict Balance Support And Correction To Ensure The Smooth Operation Of The Main Engine. Special Valve Steel Is Used For Hair Piece, Which Has Good Strength And Toughness At High Temperature. Faster Inflation And Low Noise. Strong Cooling Blade, Good Cooling Performance. When Placing The Pump Head.