Copper wire motor, with light sound andstrong load capacity, runs smoothly. High precision ceramic plunger, sturdy andwear-resistant. The oil observation window provides aclear view of the oil usage. Precision machined and forged copper pumpbody, corrosion and impact resistant. Durable shockproof pressure gauge, withreal-time visibility of working pressure. The directly connectedcrankshaft pump has a simple and compact structure, low failure rate, and no transmission loss. Double water seal design, morewear-resistant and durable.