This 80 grit, 4 seg metal bond diamond puck is for use with National’s largest concrete grinders; the GP500, GP700, and GP3000.  Counter-rotational grinders are

This counter-rotational metal bond diamond wedge is a 70 Grit, 2 Seg. The 501070-S metal bond diamond fits all of National’s counter-rotational grinders and is

This counter-rotational metal bond diamond puck is a 40 Grit, 4 Seg. The 501040-SP metal bond diamond fits all of National’s counter-rotational grinders and is

This counter-rotational metal bond diamond wedge is a 40 Grit, 2 Seg. The 501040-S metal bond diamond fits all of National’s counter-rotational grinders and is

This counter-rotational metal bond diamond puck is a 30 Grit, 10 Seg. The 501030-10 metal bond diamond fits all of National’s counter-rotational grinders