Efficient Design This PCP air pump is made of steel and aluminum inside and out for smooth upward and downward movement. 8mm brass female quick coupling can withstand over 10,000 tears and abrasions for a long life HPA Pump with safety Safe HPA Pump Air gun pump provides high pressure air up to 4500psi or 30MPA. Using cast iron base, high precision equipment processing, while the flexible micro-perforated hose provides the best performance to withstand 30MPA pressure to keep you safe with excellent quality. Wide Application The PCP pump designed for most PCP pre-charged pneumatic airgun. Also great for tire, kayak, soccer. Thoughtful Design The built-in oil-water separator is made for easy operation.