Specification Brand : JINGLING BulletPoint1 : Hole Diameter: 2.5mm (close to 3/32"); Total length: 42mm (1-21/32"); Drill depth: 3mm(1/8") BulletPoint2 : The diamond coated hole saw suitable for use in drill hole on glass, marble, tile or granite BulletPoint3 : Use with water as a lubricant, holes require No futher work as cutting is clean BulletPoint4 : NOT have center pilot drill;Start drill at 45 degree to surface and align to 90 degree as hole forms BulletPoint5 : Product Name: diamond hole saw, diamond drill bit for tile, hole saw ceramic tile Color : Silver Color1 : Silver Color2 : Green CompatibleMaterial : Drywall, Stucco, Ceiling Old Plaster, Cement Board, Sheetrock CompatibleMaterial1 : Plastic CompatibleMaterial2 : Wood CustomerPackageType : Standard Packaging CuttingAngleString : 60.0 degrees ExternallyAssignedProductIdentifier1 : 708747505412 ExternallyAssignedProductIdentifier2 : 0708747505412 FinishType : Diamond FinishType1 : Titanium FinishType2 : Gold ItemName : JINGLING 2.5mm 3/32" inch Diamond Small Drill Bit Hole Saw Masonry Tools for Glass Tile Stone Pack of 20Pcs ItemPackageDimensions_Height : 5.5118 centimeters ItemPackageDimensions_Length : 1.7018 centimeters ItemPackageDimensions_Width : 4.191 centimeters ItemPackageQuantity : 20 ItemTypeKeyword : hole-saws Manufacturer : JINGLING Material : Carbon Steel Material1 : Carbon Steel Material2 : Diamond ModelNumber : 708747505412 NumberOfItems : 20 PartNumber : 708747505412 ProductDescription : 20Pcs 2.5mm 3/32" Diamond Coated Hole Saw Drill Bits For Glass Tile Ceramic Granite The 2.5mm diamond coated hole saw suitable for use in drill hole on glass, marble, tile or granite Hole Diameter : 2.5mm (close to 3/32") Total length : 42mm (1-21/32") Drill depth: 3mm depth Shank diameter: 2.5mm ( close to 3/32") Quantity: Total 20 Pcs 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 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 Can List Any Size and Amount Of This Product: Hole diameter from 0.4mm to 230mm We will send out your order within 1-2 days after payment has been received and cleared