Marble hole opener tile granite drilling special electric drill bit diamond glass stone full perforation all porcelain

Product parameters. Name: Angle Grinder Opener. Features: Sintered diamond cutter head, cutting sharp, not easy to wear, no knife marks, strong and non-stop. Segmental design of the cutter head, low cutting resistance, smooth and neat hole opening, no broken edge. The enlarged oval chip discharge slot facilitates the discharge of chips and sharpens the drilling. Use: Marble/granite/pebble/microcrystalline stone/tile/red brick etc. Prohibited uses: metal, toughened glass, wood, concrete. Note: Water must be added to cool throughout the use. Method of use: 1 Install the hole opener on an angle grinder or other equipment. 2 Drill the hole at an angle against the marble, the smaller the force the less likely it is to slip and create a crescent-shaped positioning slot. 3, after punching out the positioning groove slowly vertical electric drill, uniform downward pressure drilling, open the process of smooth operation, do not bend shaking to advance. 4. It is recommended that the drill speed