Superior MaterialThe Syringe oil extractor pump made of EPDM high quality, durable material, Built-in dual rubber pads, fit the piston closely to avoids leakage,Thicken wall enhances high strength and provides long service life. Lock Design Just push the hose into the end of the pump and it is locked into place automatically. So you never have to worry about it pulling off or blowing off when you use the pump to fill things. Easy to operateSimple syringe-type action using the manual fluid extractor pump can dual-way extract and fill fluid by differential extractor dispenser quickly and easily. Ideal for emptying or filling up the master tank and other reservoirs DurabilityBuilt-in double rubber pads can be closely fitted to the piston to avoid leakage, thick walls can enhance wear resistance Widely Application Ideal for extracting or changing engine oils or lubricants in ATV's, boats, farm equipment, industrial gear boxes, motor vehicles, motor bikes, RV's, etc. Applicable to engine oil, gear oil, gearbox oil, including chemical resistantoils,brake fluid, diesel fuel, coolants, hydraulic systems and water, etc.