EZE-LAP Hone and Stone Diamond Sharpeners are handy little sharpeners for those hard to get places-saw blades, router bits etc. Great for throwing in a backpack for your hunting or fishing trip. These little diamond sharpeners have a 3/4" wide by 2" long sharpening pad on a 6" x 3/4" plastic handle; the handle is color coded to designate grit, and includes hanging hole. The model illustrated is the Coarse 250 grit with black handle.EZE-LAP coarse grit is a 250 grit diamond sharpener that will get the job done fast and still leave a good quality finish.EZE-LAP has been the pioneer in the production of Diamond Sharpeners since the 1970's. EZE-LAP has a patented heat treatment process that bonds the highest quality industrial grade diamond particles in a stainless alloy, to a metal substrate. This process creates a surface that measures around 72 on the Rockwell hardness scale; and results in a Diamond sharpener that will work on high tech blade steels, as well as tool steel, and most ceramic, carbide, and hardened materials.