Using your Klein Tools 4 - Inch Stainless Steel Fox Wedge is easy. When you need to split mating surfaces, just insert the sharp blade between the surfaces and gently tap it with a hammer. It's also useful for packing machinery and structures before you fix them in place. In marine environments, this wedge is a real lifesaver because of its corrosion - resistant property. When using it, make sure to wear safety goggles to protect your eyes from any flying debris. To keep your wedge in top shape, after each use, wipe it down with a dry cloth. If it gets wet, dry it thoroughly to prevent any potential rusting. Store it in a dry place to maintain its hardness and sharpness. That's all there is to it - simple and effective!