The Brass O-Ring Installation and Extraction Tool Kit contains two unique double-ended brass tools that make it quick and easy to remove or install O-rings. The finesse pick on one end is great for getting small O-rings out of grooves, while the heavy duty hook on the other end is better for digging out larger and thicker O-rings even in hard to reach places. The brass material helps to prevent damage to precision sealing surfaces. Improper installation or removal of O-rings can cause leakage or hydraulic failures in your equipment. This kit also includes a vinyl case so you don't lose your tools. Customer support is always available.