10Pcs 3mm 1/8 Inch Diamond Hole Saw Core Drill Bits Masonry Drilling Cutter for Glass Tile Gemstone 1. Please add water for coolant and drill slowly 2. Start drill at 45 Degree to 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 The 3mm diamond coated hole saw suitable for use in drill hole on glass, marble, tile or . Hole Diameter: 3mm (close to 1/8inch) Total length: 50mm (close to 2inch) Drill depth: 5mm depth Shank diameter: 2.35mm ( close to 3/32inch) Drilling speed: Drill a Holes In Seconds Use with water as a lubricant Color: Silver Material: Package Contents: 10 x Drill Bit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.