The Smaco 4-Stage Hand Pump is a durable manual charging solution, capable of reaching pressures up to 4,500 PSI (300 Bar). It features a built-in oil-water filter, a glycerin-filled gauge for precise measurements, and is made of sturdy 304 stainless steel. It is designed for refilling PCP air rifles and small diving cylinders. With a foldable base and 8mm...