Check the listing for details. Diamond Tip Hole Saw Kit 40-150 mm Core Drill Bit for Stone Marble Tile. Condition: New. Listed at 10.99 USD. 40-160 mm Diamond Coated Hole Saw Drill Bits for Stone Granite Marble Ceramic Product Specification Product Name: Diamond tip masonry bit, Stone cutting bits Outside Diameter : 40/41/42/43/45/50/53/55/60/65/68/70/75/80/85/90/95/100/105/110/120/125/130/140/150/160mm Hex Shank diameter: 10 mm (3/8") Total length: 2-9/16" (65mm) Drill Depth:30mm depth Quantity: Only 1 Piece ,You can select the size you 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 3/8" hex 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 15-30 days delivery to your home 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. Should you have any queries, please contact me directly. We Can List Any Size( Hole Diameter from 6mm - 160mm) & Amount Of This Product