Feature: 1. Pneumatic brake fluid bleeder set, designed to empty or fill the master cylinder and other fuel tanks, draw brake fluid from the fuel tank and add new oil, and then flush the brake fluid on the calipers. And it is necessary to pump fluid through the filling hole on the side of the gear box, fill the transfer case and differential, and even deliver high‑viscosity fluid. 2. Single‑person operation saves time and effort. Draining oil/air/pumping/pumping carbon. Ideal choice for extracting or replacing engine oil or lubricating oil in ATVs, ships and agricultural equipment. Great for industrial gearboxes, automobiles, motorcycles, recreational vehicles, etc. 3. Brake cylinder exhaust, connect the pipe to generate negative pressure in the pot to suck out the waste oil, and at the same time add new oil. The intake pressure of the air pump should be maintained at 6‑8bar. 4. Oil and gas separation, strong pressure, fast oil pumping, fast air removal, efficient car repair. Large‑capacity oil pump is suitable for a variety of car repair scenarios. 5. With multiple connectors, the oil pump can extract brake oil, steering assist oil, antifreeze, dilute low-corrosion liquids such as combustion chamber cleaning waste liquid. Specification: Item Type: Brake Fluid Bleeder Kit Material: ABS + Iron Color: White Battery: 1.5V AAA battery, 800mAh (included) Function: Used for pumping brake fluid Application Range: Commercial vehicles/trailers/RVs/automobiles/automobiles, etc. . Package List: 1 x Testing Pen1 x Battery 1 x Oil Pot2 x Metal Nozzle1 x Rubber Nozzle1 x Plastic Nozzle1 x Manual