XIANQI This brake bleeder kit is used for changing brake and clutch oil, as well as suck out old oil and air from replaced brake system on motorcycle car truck and pickup. Connect the extractor to the air compressor and brake caliper, turn on high power air compressor to 90-120PSI, negative pressure is generated in the braking system to suck out the waste fluid and air, and guide the new oil to fill the whole brake system. There is a long screw fittings on 0.75L refill bottle cap, which can work with the master cylinder adapter to snap on the mouth of the vehicle's brake fluid reservoir, without hand support. Fully open the valve on the long screw, the fluid will flow out, and stop once the brake fluid level in the reservoir has been sufficient to cover the threaded port, no need to keep an eye on it. But if 0.75L is not enough, remember to add new oil in time. Refill bottle can be held on the brake fluid reservoir. On the 1L waste oil extractor bottle, there is a the hanger which can hook on the engine hood and keep the bottle above the vehicle bleeder valve, as well as the trigger locker is also helpful for hand-free when suck. Also, you do not need to tread the brake pedal again and again when use this brake and clutch bleed tool. The brake system bleeding tool kit includes 4 master cylinder adapters for most vehicle models, 21 to 30mm, 24 to 32mm, 28 to 37mm, 32 to 41mm. 2 types 1/4"-18NPT, 1.8M long transparent hose is good for monitoring the working situation easily, with universal black tapered nipple for connecting caliper bleeder valve threads. FEATURES Oil pumping tank capacity: 1000ml Oil filling tank capacity: 750ml Length of Sucker Pipe: 1.8 meters Working pressure: 6-12KG PACKING LIST 1x 1L Old Oil Collection Bottle with 1.8M Hose and Black Suction Nipple (Hose: I.D. 5MM, O.D. 9MM) 1x 0.75L New Oil Refill Bottle NOTE 1. Please wear gloves and goggles when use. 2. The vacuum brake bleeding kit should be used by professional or under the guidance of a professional. 3. Always refer to equipment manufacturer's operation instruction. 4. Please hold the bottle cap to open the bottle, not the trigger or anything else. 5. It is pneumatic tool only, can not use as a hand tool, you can search for manual tool. 6. If there is any leakage on the joint of the vehicle bleeder valve and black suction nipple, please try GREASE to seal it. 7. The new oil bottle is 0.75L, and if 0.75L is not enough, remember to add new oil in time while use. If the brake fluid in the main cylinder runs out, the air will follow into the brake system 8. When using, please make sure that the ball valve on the new oil bottle is fully opened to ensure the flow rate