The TRIFECTO 3 STEP POLISHING SYSTEM by Diamax is a WET/DRY Pad designed for granite, marble, engineered stone - but only use WET on engineered stone. Reduces polishing time by 40% to 50%. Dry use but for best results use all 3 steps wet. Start with 120 grit stone, then repeat Pos. 1 with a little water. Achieves the same gloss meter reading of a full system in half the time. MAX RPM: 4,000.