apex ecomm 16mm, 18mm Diamond Coated Hole Saw Drill Bits for Glass Ceramic Tile Marble Rock Porcelain
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About the itemSize - 16mm Drilling Diameter, 7mm Shank; 18mm Drilling Diameter, 8mm ShankDiamond Coated - Diamond coating enhances the drilling speed, which makes the bit sharper.Nickel Plated Surface - The nickel plating surface can extend the service life and enhance surface corrosion resistance.Special Design - Side open can remove the waste to keep the drill bit clean.Applications - Perfect for drilling glass, ceramics, porcelain, ceramic tile, porcelain tile, limestone, slate, marble, light stone and fiberglass
