JINGLING 180mm 7" inch Diamond Tile Hole Saw Glass Drill Bit for Ceramic Stone Granite Masonry Tools

JINGLING 180mm 7.1" inch Diamond Coated Drill Bit Hole Cutter Saw for Glass Tile Ceramic Marble Product Name: 7.1" inch Diamond tip drill bit, 180mm Glass hole saw bit, 180mm Glass drill bit Product Description: Hole/Outer Diameter: 180mm (close to 7.1" inch) Inner Diameter: 176mm Shank Diameter: 10mm(3/8") Total Length: 55mm (2.16") Drill depth: 25mm(1") Quantity: 1 Piece Recommend Speed: 350-700RPM Use: Masonry Drilling Material: Diamond, steel Features Brand new & high quality Easy to use, good performance and long life Excellent for making clean and accurate hole on glass, tile, stone, granite and marble Works better with an electric drill (Excluding in this item) Use with water as a lubricant Drilling speed: drill a hole in seconds Use with water as a lubricant It is strongly recommended to install it on a bench drill, and it is not recommended to install it on a hand drill The diamond hole saw does NOT have center Pilot Drill There is no need for a Pilot Drill Bit, because pilots are not safe for glass Quick Tips 1. Please add water for coolant and drill slowly 2. Start drill at 45 degree to surface and align to 90 degree as hole forms 3. Never use drills while machine is in hammer action 4. Holes require no futher work as cutting is clean We can list any size( hole diameter from 6mm - 160mm) & amount of this product How to use a hand drill to drill holes in the stone/tile/glass? Step 1. The bit on the stone/tile/glass 45 degree, open 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 stone/tile/glass finally, the technique requires a "wobble" of the drill rather that steady pressure straight on

• Diamond hole saws are made of carbon steel and high quality diamond powdert, make these glass drill bits particularly sturdy, sharp, and durable
• Diamond glass drill bits are suitable for drilling holes in glass, marble, ceramic tiles, or granite
• Outer Diameter: 180mm(7.1"); Inner Diameter: 176mm(6.93"); Drill Depth: 25mm(1"); Grit: 80 Coarse
• NOT have center pilot drill, 3/8 inch hex shank will fit handheld or upright drillers
• Product Name: Diamond hole saw set, hole saw for tile, Granite hole saw