Specification Brand : BQLZR BulletPoint1 : High-quality material: high-quality diamond material is selected, it is suitable for long-term use, easy to install and use. BulletPoint2 : Wide application: strong and wear-resistant, suitable for jade, pearl, shell, crystal lettering and engraving. BulletPoint3 : How to use: Keep the drill straight, add water to cool, and drill slowly. BulletPoint4 : Precautions: Do not use excessive force, the grinding powder is not easy to discharge, and the tools are easily damaged. BulletPoint5 : Size: 42x2.3mm/1.65x0.09Inch(L x Dia) Shank diameter: 2.35mm/0.09Inch Head diameter: 0.5mm/0.02Inch Sand length: 6-8mm/0.24-0.31Inch Overall length: 42mm/1.65Inch Color : Grey CuttingAngleString : 135.0 degrees ExternallyAssignedProductIdentifier1 : 192031051103 ExternallyAssignedProductIdentifier2 : 0192031051103 FinishType : Gemstones,Silver IncludedComponents : 100 x Burrs Drill Bits ItemDisplayDimensions_Height : 0.5 inches ItemDisplayDimensions_Length : 6 inches ItemDisplayDimensions_Width : 3 inches ItemName : BQLZR 0.5mm Silver Gemstones Burrs Engraving Drill Bits Jewelry Jade Shell Carving Drill Hole Tools Pack of 100 ItemPackageDimensions_Height : 11.94 centimeters ItemPackageDimensions_Length : 1.02 centimeters ItemPackageDimensions_Width : 8.89 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : wood-drill-bit-sets Manufacturer : BQLZR Material : Diamond, Metal ModelNumber : N23801 NumberOfFlutes : 2 NumberOfItems : 100 NumberOfPieces : 100 PartNumber : N23801 ProductDescription : Feature: 1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information; 2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking. 3. High-quality material: high-quality material is selected, it is suitable for long-term use, easy to install and use. 4. Wide application: strong and wear-resistant, suitable for jade, pearl, shell, crystal lettering and engraving. 5. How to use: Keep the drill straight, add water to cool, and drill slowly. 6. Precautions: Do not use excessive force, the grinding powder is not easy to discharge, and the tools are easily damaged. Safety instructions: 1. Drill bits permanently enclosed in a cartridge or housing with less than 2mm of exposed. 2. The Drill bits product is not use for people under 18 years. 3. The item is only for industrial engraving, not hazardous article. Specification: Material: Metal Color: Silver Brand name: BQLZR Size: Size: 42x2.3mm/1.65x0.09Inch(L x Dia) Shank diameter: 2.35mm/0.09Inch Head diameter: 0.5mm/0.02Inch Sand length: 6-8mm/0.24-0.31Inch Overall length: 42mm/1.65Inch Weight: 125g Package Include:100 x Burrs Drill Bits ProductSiteLaunchDate : 2016-08-11T02:18:54.438Z Size : 3.175mm SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation : Glass SurfaceRecommendation1 : Polycarbonate SurfaceRecommendation2 : Metal SurfaceRecommendation3 : Fi SurfaceRecommendation4 : Wood UnitCount : 100 UnspscCode : 31191600