Description:This diamond drill is made of industrial carbon steel with a nickel-plated coating to resist corrosion. Thickened diamond coating on top provides superior cutting strength for precise, smooth cuts without the need for hemming for maximum drilling results. The large drill hole helps the cooling water to enter, prevents the chip and other particles from being discharged into the drill hole, ensures smooth punching, and makes the drilling process easier. Small hole-when debris is caught in the cutter. We can pull it out with a screwdriver. Give you an excellent experience. This diamond cutter can be used to remove rings from glass, marble, tile, ceramic, pvc or other materials. Specifications:Item Name:tile openerColor: Blue,Orange Size: 13.5x24x2.5cmQuantity:16pcs:10pcs(6-50mm) marble openers + 1 x locator + 4 x triangle drills (6-12mm) + 1 x screwdriver11pcs: 10pcs (6-50mm) marble opener + 1 x locatorNote:-There can be a small size error for manual measurement.-The color deviation may vary due to different monitor settings, Please understand.