10PCS 7/20 inch Diamond Drill Bit Set - Steel Diamond Coated Hole Saw Drill Bits Kit for Glass, Marble, Granite, Ceramic, Tile & Porcelain - Perfect for DIY Projects, Home Renovation & Professional Use

Product Description

Upgrade Diamond Bits The cutter head incision design ensures the sharpness of the drill bit and facilitates chip removal; the universal drill shank is suitable for major brands of electric drills, with strong practicability and a wide range of uses, suitable for various materials, including glass, plastic and ceramics, slate, marble, etc. Side hole design The drill is designed with side holes, which can be opened to remove chips. The side holes allow you to quickly remove any block debris after drilling, keep the drill clean, and at the same time, it can dissipate heat when the drill is working. Rugged and durable material The diamond hole saw is made of steel, which is not easy to rust. Each bit is coated with an extra layer of nickel, which increases the drilling speed and makes the bit sharper and more durable. Solid one-piece alloy steel construction, heat treated and extra thick material for durability. Step 1 The bit on the glass 45 degree, drilling a half-moon notch on it. Step 2 Slowly up the bit to 60 degrees, and then gently drill. Step 3 Reached 90 degrees, continue to drill. Step 4 Drill through the glass finally.