... hardener surface.2.Used for maintaining, repairing and revamping the granite, marble and artificial stone floor , liquid penetrant or hardener ... white pad10",13",17"Crystal surface the stone,marble,granite etc.Strong power white pad10",13",17"Crystal surface ... effectAnimal hair pad10",13",17"Polish the stone,marble,granite etc.Black pad10",13",17"The material is harder,and it ...