【Well Design】Ideal for topping up difficult to access oiling points on motor vehicles, lawn mowers, chain saws, outboard and two stroke motors, and other add jobs around the workshop and home. 【Ideal Mechanism】Piston spring operated type features down stroke mechanism. Designed with a nozzle holder to drain back redundant fluids back into the container. 【High-quality Materials】Wetted materials: PE, Aluminum, Nitrile Rubber (Buna-N), Steel, PVC 【Widely Use】Suitable for all oils, automatic transmission fluids, brake fluids and general purpose cleaners, the self-contained unit will prevent oil contamination when not in use.