Feature: *The hole opener is made by a special vacuum brazing process, so the service life of this hole opener is 5 times that of the traditional ceramic tile drill, which is durable and long-lasting; *The hole opener can drill quickly, easily and cleanly on tiles and other materials (marble, granite, clinker, roof ceramic, plastic, etc.) without water; the M14 connector makes this hole opener suitable for all common angle grinders, so it should be an essential part of every tiler's tool kit; *The drilling performance of the hole opener is about 1cm in 10~15 seconds, the drilling depth is 40mm; even in very hard materials such as granite, the drilling speed of the hole opener is very high; besides, the setting time is extremely short, which can save money in the long run; *Used in metallurgy, petrol, electronics, electrical appliances, chemical, shipbuilding, machinery and other industries for the installation and maintenance of wires, pipes, signal lights and measuring devices. Steps: Step 1: Lean slightly at the oblique angle, the smaller the force, the less slippery, and the crescent-shaped positioning groove will open at high speed throughout the process; Step 2: Slowly build up the hole opener and shake it while punching to expel the dirt faster and increase the punching speed; Reminder: Adding water during operation can extend the life of the hole opener. Specifications: Product Name: M14 Hole Opener Material: Brazing high-quality emery + high carbon steel substrate Surface treatment: electrophoretic blackening Color: black,Silver (As shown) Optional Diameter: 6/8/10/12/14/16mm Matching model: M14 thread tooth type angle grinder Suitable for: Glass/ceramic/marble/concrete/vitrified tile/microcrystalline stone/granite/quartz stone/full ceramic tile, etc. Quantity: 1pc Package Included: 1 Hole Opener Note: 1.Transition: 1cm=10mm=0.39inch. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 3. Please allow slight manual measurement deviation for the data. _x000D_