... as sandstone ,limestone ,cement ,asphalt ,granite ,marble ,ceramics ,concrete ,etc.CAN BE USED TO: ANGLE GRINDERS, POWERHAND SAW, ... laser-welded discs are suitable for heavy duty, such as concrete products, granite, marble, bricks, refractory material, sandstone, block, asphalt ... adopts the latest advanced technology abroad. This series products have to be used together with pneumatic and electromotion ...