Diamond PCD cup grinding wheels are made of 6 pc  1/3 polycrystaline diamond segments.  This type of wheel

is designed to remove paint coatings, epoxy coatings, waterproofing membrane when they are more than 2mm thick.

This wheel will break up the coatings so normal diamond grinding wheels will not glaze when used after PCD wheels have done their jobs.

Available in 2 different sizes:  125x22mm and 180x22mm