EXTRACT AND INJECT FLUIDS: Use the simple syringe-type action of the ABN Automotive Fluid Transfer Hand Pump Syringe Bottle – Transmission, Brake, Steering, Differential Extractor Dispenser to pump fluids in and out (extracts or dispenses) quickly and cleanly USE WITH SEVERAL FLUIDS: Ideal for evacuating or topping off master cylinders and other reservoirs, extracting brake fluid out of a reservoir and adding new fluid before flushing brake fluid at the calipers, for power steering, coolant, oil changes, changing axle rear end grease, filling transmissions with no dipstick that require pumping fluid through a fill hole in the side of the trans, and filling transfer cases and differentials; Can even transfer high viscosity fluids Suitable for Brake Fluid, Engine Oil, Gear Oil, Transmission Fluid, Water, etc. 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.