The USA Mower Blades' All American Sharpener 5000 will quickly and easily sharpen mulching or standard lawn mower blades. This sharpener can be mounted to a bench top or held in a vice. The unique design has a vice head to hold the mower blade and an articulating arm to attach the grinder. The arm holds the grinder and ensures the proper sharpening angle each time. The All American Sharpener 5000 includes a pin with M8x1.25 thread to connect a standard 4-1/2-inch angle grinder. The pin screws into the threaded port where the handle is usually secured. The All American Sharpener 5000 is specifically designed to sharpen mulching blades. The sharpener has a rotating vice head that allows the operator to adjust for grinding specific areas on the lower and upper part of the mulching blade. The All American Sharpener 5000 takes the guess work out of blade sharpening and results in consistent and even grind every time. Blades can be sharpened in a matter of seconds once tool is set up. Set up is quick and easy. Sharpener can be mounted (bolted or clamped) to almost any surface. The All American Sharpener 5000 can be easily removed from the mounting bracket for storage. Mounting bracket can even be placed on a truck or trailer for portable sharpening. The All American Sharpener 5000 Specifications: Holds blades securely to perfectly sharpen mulching blades in a matter of seconds.The All American Sharpener 5000 will sharpen standard and mulching blades.A 24-grit to 60-grit flapper wheel is suitable for grinding.Completely portable with the use of a cordless grinder.Includes adapter pin to attach most grinders to the sharpener assembly.Easy to set up and use.Sharpen multiple blades easily and efficiently.Used blades and previously ground blades can be brought back to like-new condition.Pivoting head allows for sharpening mulching blades.Pivoting head allows operator to easily sharpen both sections of a mulching blade at the correct angle.Mounting bracket can be attached in a variety of ways.Mounting bracket can be attached to a truck or trailer for use away from the shop.Includes a pin with M8x1.25 thread to connect a standard 4-1/2-inch angle grinder.