Consist of precisely-patterned, composite abrasive structures distributed uniformly on a flexible backing. As these structures wear, fresh, sharp diamond abrasive is continually exposed, resulting in uniform, consistent and fast cutting action through the life of the product. Red for refurbishing and initial finishing of worn and damaged stone floors using low-speed rotary or automatic equipment. Blue for intermediate finishing and pre-polishing stone floors using low-speed rotary or automatic equipment.