Specification Brand : Auniwaig BulletPoint1 : 【Parameter】- Drilling Diameter: 42mm/1.65";Drilling Depth: 25mm/1";Total Length: 50mm/2";Material:Carbon Steel,Alloy Steel;Surface treatment:Nickel Plating. BulletPoint2 : 【Material】- These diamond drill bits made of low carbon steel and alloy steel that is durable and have a long sevice life,which are high quality and good performance that excellent for making clean and accurate hole. BulletPoint3 : 【Sharp&Smooth Cut】- Coated with high quality diamond, the diamond hole saw creates a high precision, smooth cut with no broken edges. Reduced drill speeds, low drill pressure and increased use of water lubrication will extend drill bit life considerably. BulletPoint4 : 【Wide Usage】- This diamond coated core drill bit removes a complete circle from glass, marble, tiles,granite, ceramic or other.They are perfect for drill glass, tile bottles,blocks jars, fiberglass porcelain tile ceramic, slate Mable, granite light stone. BulletPoint5 : 【Attention】- Please keep adding water when the diamond drill bits are working on the glass or ceramics.low drill pressure and increased use of water lubrication will extend drill bit life. BulletPoint6 : ✔ Thick Blade Opening Fast -- The hot pressing technology makes the blade thick and opening more fast. Color : Silver CompatibleMaterial1 : Glass CompatibleMaterial2 : Ceramic CompatibleMaterial3 : Ceramic CompatibleMaterial4 : Marble CompatibleMaterial5 : Wood CompatibleMaterial6 : Iron ExternallyAssignedProductIdentifier : 4048962287219 ExternallyAssignedProductIdentifier1 : 850004328552 ExternallyAssignedProductIdentifier2 : 0850004328552 FinishType : Titanium GpsrSafetyAttestation : 1 IncludedComponents : PRO Multi Material Power Change Plus Hole Saw Set - Transparent Case ItemName : Auniwaig Diamond Drill Bits, 42mm Hole Saw Diamond Drill Bit Hollow Core Drill Bit for Diamond Coating, Glass, Ceramics, Porcelain, Ceramic Tile, Marble 2Pcs ItemPackageDimensions_Height : 10.8 centimeters ItemPackageDimensions_Length : 4.8 centimeters ItemPackageDimensions_Width : 9.4 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : hole-saws Manufacturer : Auniwaig Material : Coated Steel Material1 : Carbon Steel Material2 : Alloy Steel ModelName : Bosch 14x PRO Multi Material Power Change Plus Hole Saw Set - Transparent Case (for Softwood, Drywall, Ø 20-76 mm, Professional Accessory Rotary Drill/Drivers) ModelNumber : LF010076 NumberOfBoxes : 1 NumberOfFlutes : 3 NumberOfItems : 1 NumberOfPieces : 1 NumberOfTeeth : 1 PackageLevel : unit PartNumber : CU5020S2511HF-FBA PowerSourceType : hand_powered ProductDescription : Auniwaig Diamond Drill Bits Hole Saw for Diamond Coating, GlassTechnical ParametersProduct Name:Diamond Drill BitsDrilling Diameter: 42mm/1.65"Drilling Depth: 25mm/1"Total Length: 50mm/2"Material:Carbon Steel,Alloy SteelSurface treatment:NickelPlatingProduct Feature1.Nickel plating on these bits maximizes your tools life with great resistance to corrosion.2.Side holes allow for easy slug removal after drilling.3.Each hole is treated with smooth and accurate surface treatment,and the top oh the hole is thickened to achieve excellent cutting strength.4.Used on Drill Glass,Wood,Tile Bottles,Blocks Jars, Ceramic,Slate Mable, Granite Light Stone, and other hard surfaces.Note:* When you using the diamond drill bits, please use lubrication (water), otherwise the diamond core drill will burn. Not for use on Concrete or for depths beyond about 1/2-inch.Package Content2 x Diamond Drill Bits Hole Saw ProductSiteLaunchDate : 2021-06-10T11:57:58.157Z Size : 42mm Style : Compact SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation1 : Wood SurfaceRecommendation2 : Metal SurfaceRecommendation3 : Masonry SurfaceRecommendation4 : Plastic UnitCount : 1 UnspscCode : 27110000