100mm 4 inch Diamond Hole Saw Tile Core Drill Bit Coated Masonry Tools

JINGLING 100mm  4" inch  Diamond Coated Hole Saw Drill Bits for Stone Granite Marble Ceramic Product Specification Product Name: 100mm Diamond tip masonry bit, 4" Stone cutting bits Outside Diameter : 10 0mm (close to 4") Inner Diameter: 96.9mm Hex Shank Diameter : 10mm (3/8") Total length: 65mm ( 2-9/16" ) Drill depth: 29mm (1.14") Recommend Speed:  530-1060RPM Quantity: 1 Piece 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 3/8" hex shank that will fit cordless screwdrivers, drills etc or use in standard drill chuck. Drilling speed: Drill a hole 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 Just a friendly reminder: Please add the water to cool the drill bit while drilling hole process 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/stone. How to use a hand drill to drill holes in the glass/tile/stone? Step 1. The bit on the glass/tile/stone 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 glass/tile/stone finally, the technique requires a “wobble” of the drill rather that steady pressure straight on We will send out your order within 1-2 days after payment has been received and cleared. Please let us know if you are looking for other accessories or hardware. We Can List Any Size( Hole Diameter from 6mm - 160mm) & Amount Of This Product

Returns Accepted for this item if it's within 30 Days