<p>APWONE 4500psi High Pressure Hand Pump 3 Stage. This three stage pump with in built filters is ideal for filling most popular small Inflatable equipment as air-gun.</p> <p><b>Before Pumping:</b> <br>1. Long time and distance transportation will cause the connection of the pump components to become loose. Please tighten the hose connector, the pressure gauge connector and the pump bottom pressure relief screw before pumping. Or it will cause air leak. Please refer to product short video (Especially the use of pressure relief screw). <br>2. Please pump up with correct gesture so you can fulfilled the equipment. Wrong posture may cause fail to get high air pressure. <br>3. Attention: Do not including extra (ACC) Silicon oil & Check Valve spring. Just install this pump, it will be work well as soon as you receive. If leaking air, please add some oil.</p> <p><b>Specification:</b> <br>Material: 304 Stainless Steel <br>Pump Chamber: 3-Stage 0-4500 psi (0-30 MPa) <br>Max Pressure: 4500psi/310bar <br>Pump Net Weight: 5.23 lbs (2.37 kg)</p> <p><b>Package Contains:</b> <br>1 x Hand Pump <br>1 x Manual <br>A Set of Accessories</p>