Superabrasive's Calibra ceramic discs are an excellent solution for the removal of difficult scratches left behind by the metal bond grinding steps
Calibra discs are composed of a special hybrid ceramic bond and are designed for hard and medium concrete applications only; the life of Calibra is shorter when used on softer floors
3 inch size; velcro-backed; offered in 30, 50, 100 and 200 grits