Uxcell 2Pcs Diamond Drill Bit Hole Saw With Watt Glass Marble Granite Fiberglass Ceramic Tool

The electroplated diamond is uniform and more wear-resistant. The diamond drill bit achieves high precision and smooth cuts without edge breakage. Made of high-quality alloy steel, with good toughness and high strength. Suitable for cutting accurate holes on glass, ceramic, tile, porcelain, marble, stone bottles and pots. Not suitable for drilling tempered glass, plastic and wood. The diamond hole saw with clearance hole facilitates the entry of cooling water and the escape of chips from the drilled hole. Makes the drilling process easier. The cutting is flat and smooth without scratches. 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. Use at low drilling speeds and drilling pressure. Always work with coolant (water) when drilling. Not suited for concrete or depth beyond about 1/2 inch. Before the hole is opened, the diamond drill bit is adjusted without jumping, the hole should be entered smoothly, and no side pressure is applied. Pay attention to wearing equipment during operation.