7-Piece Diamond Hole Saw Kit, Diamond Core Drill Bits Set Tile Hole Saw Kit Vacuum Brazed Core Drill Bits for Glass Marble Stone Ceramic Brick(19/25/3

Specification: Material: Artificial diamond and Steel body Style: Set of 7 Pieces. (19/25/35/45/51mm) drill bits+20mm Finger Bits+SDS Adapter Drill Diameter:19mm(3/4"), 25mm(1 "), 35mm(1-3/8"), 45mm(1-3/4"), 51mm(2") Compatible Material: Glass, Marble, Granite Stone, Porcelain Tile, Ceramic, Brick Notice: Do not use these drill bits with hammer modeOnly fit these drill bits on a cord drill, not cordless drill(no enough power)Only for tile drilling not recommend for the material behind the tileFor horizontal drilling,just give a gentle pressureFor vertical drilling, the weight of the machine will give sufficient pressureFinger Bits are used for enlarging, shaping or rounding bevel existing holes