3.5 Stage High Pressure Design and High Effency: With the exclusive 3.5 stage design by GX pump, it compresses the maximum amount of air possible from each smooth stroke. That means fewer strokes and less work to fill your air gun. You will also save more power comparing with traditional hand pumps. Test inflating result: Charging 500cc tank from 1000PSI-3000PSI, needs about 350 fills; 200cc Tank from 1000PSI-3000Psi.needs about 140 fills.

With Oil-Moisture Filter : With the new filter design, it can filter above 90% of moisture. So you can feel free to inflate your scuba diving tank without moisture air. When the blue desiccant become red as enough water, you can pour them out for dring by referring to the user manual.

Durable Quality and Durable Performance: With the high quality stainless steel pump body and rubber handle, wide and strong base plate, it can ensure more stable and long-lasting using life. It can bear over 15000 times of tear and wear. At the 200 bar pressure, you can continuously use the pump more than 2 hours.

Specifications: General Output nut: M10*1 (not G1/8) , 8mm wide use quick connector, Max pressure : 310 bar or 4500 psi, Light weight 3.1 kg, Portable size: length 62cm/24.5inch closed, 105cm/41.3inch open

Note: Don't add oil or grease when received. When added in future , pls pump freely 100 strokes without connectiong to any tanks first to avoid leaking oil from pressure gauge. What You Get: GX PCP Hand Pump, user manual, accessory kit.