MK Diamond's dry-grinding cup wheels have a unique shape which allow for superior form mark removal. These highly efficient cup wheels are also effective in the process of concrete deburring and rough-surface grinding. Their lightweight design and range of sizes ensure fast surface grinding with a minimum of operator fatigue. Can be used wet or dry. Tool King Carries a Wide Selection of MK Diamond Grinding Cup Wheels and many other MK Diamond Tools for Sale at Low Online Prices.