Description:3-stage pump design, 30% more efficient than traditional pumps Smooth upward and downwards motion High pressure goes up to 4500psi Precision pressure gauge for monitoring pressure level High grade 304 stainless steel pump body is more safety than iron body sold by other sellers All spare parts use advanced CNC technology Bleed valve to prevent oil and water into your equipment Ergonomically designed handle for comfortable use Folding footplate for space saving and easy storage Flexible micro-bore hose for convenient filling Come with O-rings and other complete accessories Comes flat packed with full instructions and tools to assemble Applications:Suitable for any brand of pistols, rifles and air gunsGreat for motorcycle tires, bicycle tires, inflatable kayaks, inflatable balls etc.Operation:1.Familiarize yourself with the operation procedure. Incorrect procedure may cause damage to your pump or personalinjury.2.Connect the pump to your gas cylinder. Connect the cylinder head to the pump according to instructions provided by the gas cylinder. Package List: 1 x Inflator (pipe with oil-water separator)1 x Wrench7 x O-ring1 x Spring1 x Ball1 x High Pressure Piston Ring1 x Hex Wrench2 x Metal Connector2 x Long Screw5 x Filter Element1 x Pressure Gauge1 x User ManualNOTE: Please read and understand your gas cylinder manual before operation of this pump.1.Check the discharge valve screw, make sure it is tight2.Use both feet floor to ensurethe stability of the pump.3.Place your gas cylinder on a mat (make sure the hose is not kinked). To start, pull the handle bar up fast, and then press it down to pressurize your gas cylinder. When the pressure is above 10Mpa, it is normal to feel increasingly more difficult to pump. This indicates that the pressure is building up. 4. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering..