Adjustable Pressure Valve: This Transmission Fluid Pump features a pressure relief valve with an adjustable pressure range of 0-70PSI. It also includes an oil filling funnel device, ensuring a clean and convenient oil filling process without any splashing. Material: The Transmission Fluid Transfer Pump is made of pure copper and plastic material, ensuring long term durability. Easy to Use: To use this Transmission Fluid Extractor, pour the oil into the bottle, then connect it to the air compressors source. Adjust the air pressure to 2 kg (pull open the left knob and rotate clockwise), then open the ball valve for oil filling. Specifications: This Transmission Fluid Evacuator measures24.02inchx7.09inch in size. 8L Large Capacity: 8L Vehicle Transmission Transfer Gear Oil Fluid Air Pump Set provides ample space for storing oil, reducing the need for frequent refills. Specification: 61cmx18cm/24.02inchx7.09inch Package Includes:1Transmission Fluid Pump(With Adapter)