8mm 5/16" Diamond Hole Saw Drill Bit Coated Masonry Tools for Rocks Stone Glass

8mm Diamond Coated Hole Saw Drill Bits for Stone Granite Marble Ceramic Pack of 10Pcs Product Specification Product Name:Diamond tip masonry bit,Stone cutting bits,Granite hole bit Outside Diameter : 8 mm Internal Diameter: 5.5mm Shank Diameter: 6.5mm Drilling Depth: 29mm Total Length: 55mm Brand Name: Joiner Use: Masonry Drilling Material: Diamond, steel Please choose from the drop down menu which size best qualifies your need Features Brand new & High quality Easy to use, Good performance and long life Excellent for making clean and accurate hole on stone, granite, marble, tile Works better with a electric drill( Excluding in this item ) Diamond drill set with standard 6.5 mm shank that will fit cordless screwdrivers, drills etc or use in standard drill chuck Drilling speed: Drill a holes in seconds Use with water as a lubricant 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 Regular Air postage from China to United States is FREE and takes 10-25 days delivery to your home We will send out your order within 1-2 days after payment has been received and cleared 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 rocks/tile/glass? Step 1. The bit on the rocks/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 rocks/tile/glass finally Welcome to Visit Our Store:www./shops/DiamondTools30