Sourcingmap 12pcs 8mm Diamond Drill Bit Hole Saw for Tile Glass Marble Fiberglass Ceramic Tool Silver Tone

• Diamond coating maximizes performance and retains a sharper cutting edge than traditional carbide or bimetal hole saws.
• Nickel plating on these bits maximizes your tools life with great resistance to corrosion.
• Side holes allow for easy slug removal after drilling.
• Suitable for cutting accurate holes on glass, ceramics, porcelain, ceramic tile, porcelain tile etc.. Not suitable for drilling tempered glass, plastic and wood.
• Please use at low drill speeds and drill pressure. Always work with coolant (water) when drilling. Not suited for use on concrete or for depths beyond about 1/2 inch.

High performance in cutting glass, slate, tile, porcelain etc. Tiny diamond particles coated tip offers sharp cutting. To prolong its using life, please remember to keep it with coolant sometimes. Specification: Product Name: Glass Hole Saw. Total Size:51 x 8mm / 2.01 x 0.31inch (L*D) Shank Size: 20 x 5.5mm / 0.79 x 0.22inch (L*D) Drilling Diameter: 8mm / 0.31inch