Check the listing for details. 10Pcs 2.5-10 mm Diamond Core Drill Bits Tip Hole Saw Coated Masonry Tools. Condition: New. Listed at 12.80 USD. 10Pcs 2.5-10mm Diamond Coated Hole Cutter Saw Drill Bits Glass Tile Ceramic Marble The diamond coated hole saw suitable for use in drill hole on glass, marble, tile or granite. Product Name: diamond tip drill bit, glass hole saw bit, glass drill bit Hole Diameter: 2.5-10 mm ( Please select the Hole Diameter which you need ) Hole Diameter External Diameter Internal Diameter Shank Diameter Rim Thickness Total Length Drilling Depth Quantity 2.5mm 2.5mm / 2.3 0.8 42 15 10 Pieces 3mm (1/8") 3.2mm / 2.8 0.8 50 15 10 Pieces 3.5mm 3.6mm / 3.0 0.9 46 15 10 Pieces 4mm (5/32") 4.2mm / 3.6 1.0 45 20 10 Pieces 4.5mm 4.6mm / 4.0 1.0 45 20 10 Pieces 5mm (3/16") 5.2mm / 4.5 1.0 50 20 10 Pieces 5.5mm 5.6mm / 5.0 1.0 50 20 10 Pieces 6mm (1/4") 6.2mm 4 5-5.5 1.1 50 20 10 Pieces 8mm (5/16") 8.2mm 5.6 6-7.5 1.1 50 22 10 Pieces 9mm (11/32") 9.2mm 7 6-7.5 1.1 50 23 10 Pieces 10mm (3/8") 10.2mm 8 6-7.5 1.1 50 23 10 Pieces Quantiy: Only 10 Pieces Shank Diameter: 2.3-7.5mm Total Length: 42-50 mm 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 We Can List Any Size( Hole diameter from 0.4mm - 230mm) & Amount Of This Product Regular Air postage from China to Worldwide and takes 15-35 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.