... aggravating block and 4 KG aluminium alloy sanding discs, which up to 97 KG, especially suitable for the stone processing and renovation ... industrial and mining, building, hall, especially cleaning company is used to daily nursing and special treatment for stoneFeatures:1.2.5HP ... accidental opening, which provide security.3.Low gravity to set up water tanks, and save more energy when using.4.Rotating ...