Professional grinding wheels for Silvey and Simington chisel chain grinders. These wheels are 8" in diameter and 3/16" thick. Wheels are made of vitrified aluminum oxide and are very fine grit compared to other grinding wheels. This means they leave an unbelievable edge, but you cannot remove material quickly without burning the cutter. They must be dressed with a diamond before use. Salmon colored wheels are our best sellers, mainly because they hold their shape better than other wheels. Take your time with this wheel, it will easily burn your cutters, but it leaves an incredibly sharp cutter.