Specification Brand : JINGLING BulletPoint : DT70712 Extreme Masonry Drill Drive Set, 19 Piece BulletPoint1 : 1 2 3mm diamond tipped drill bit kit is ideal tools for dremel accessories and jewelry drill kit BulletPoint2 : Used for drilling holes in rocks,sea glass,shells,ceramic,etc. For making bead,earrings,pendents BulletPoint3 : Premium type diamond coated grit 120, more durable than ordinary diamond drill bit set BulletPoint4 : Jewelry drill bits with 1/8 inch shank for dremel, suitable for various carving machine,lapidary equipment,flex shafts with 1/8" chuck BulletPoint5 : Total Quantity:30Pcs with 3 Different Sizes; Head Diameter:1mm(1/24"),2mm(0.08"),3mm(1/8"); Heads Shapes:Cylindrical; Drill Depth:8mm(5/16"); Length:45mm(1-3/4"); Color : Silver CustomerPackageType : Standard Packaging CuttingAngleString : 135 degrees ExternallyAssignedProductIdentifier : 5011204605019 ExternallyAssignedProductIdentifier1 : 4048962436037 ExternallyAssignedProductIdentifier2 : 04048962436037 ExternallyAssignedProductIdentifier3 : 00028874025738 FinishType : Coated GpsrSafetyAttestation : 1 IncludedComponents : 1x 8mm Drill Bit IncludedComponents1 : Handtools IncludedComponents2 : Hammers IncludedComponents3 : Drilling Hammer ItemDisplayDimensions_Height : 21.5 centimeters ItemDisplayDimensions_Length : 15 centimeters ItemDisplayDimensions_Width : 6.5 centimeters ItemName : JINGLING 1 2 3 mm Diamond Drill Bits Stone Carving Kit Lapidary Supplies Jewelry Making Glass Cutting Bit for Dremel Tool Accessories Pack of 30Pcs ItemPackageDimensions_Height : 14.7066 centimeters ItemPackageDimensions_Length : 1.397 centimeters ItemPackageDimensions_Width : 7.112 centimeters ItemPackageQuantity : 1 ItemShape : Straight ItemTypeKeyword : masonry-drill-bit-sets Manufacturer : JINGLING Material : Diamond Material1 : Carbide Material2 : Alloy Steel ModelNumber : 561646 NumberOfFlutes : 2 NumberOfItems : 30 NumberOfPieces : 30 PackageLevel : unit PartNumber : JPMZ-YZ-1-2-3mm-30Pcs ProductDescription : JINGLING Premium Quality 30Pcs 1 2 3 mm Diamond Drill Bits Kit with 1/8" Shank for Dremel Jewelry Making Lapidary Supplies Tools for Gemstone Sea Glass Shells Rocks Specifications and shapes: Product Name: Diamond drill bits for stone, Tile drill bits ceramic diamond, Jewelry Drill Bits Heads Shapes: Cylindrical Heads Diameter: 1mm(1/24"),2mm(0.08") and 3mm(1/8"), Solid not Hollow Shank Diameter: 3mm (close to 1/8") Suitable for dremel, various carving machine,lapidary equipment, flex shafts with 1/8" chuck Drill Depth: 8mm(5/16") Total Length: 45mm(1-3/4") Quantity: Total 30Pcs, each size 10Pcs (Including 1mm 10Pcs+2mm 10Pcs+3mm 10Pcs) Grit: 120 (medium) Premium type diamond coated grit 120, more durable than ordinary diamond drill bit set Recommended speed: 24000 RPM or more 1 2 3mm diamond tipped drill bit kit is ideal tools for dremel accessories and jewelry drill kit Suitable for drilling holes in rocks, sea glass,shells, ceramic, jewelry, etc. Jewelry drill bits are used to make beads, earrings, pendants Use with water as a lubricant is better Keep the hole you're drilling constantly bathed in water or feed water to the drilling spot. If there is not enough water to cool, the diamond at the front of the stone drill bit will quickly wear off because of high temperature. Light pressure and slow feed rate are beneficial for chip removal, allowing the head of the glass drill bits to continuously grind the material being processed. Do not press hard during drilling operations to avoid the drill bit being broken or bent Just a friendly reminder: The Shank diameter of grinding bit is 3mm (close to 1/8 inch) It is NOT suitable for machines with 3/32 inch chuck, such as Electric Nail Drill ProductSiteLaunchDate : 2024-05-07T14:52:16.049Z Size : 1/2/3mm set, 10Pcs per size StreetDate : 2012-06-13T00:00:01Z Style : 5-Pack SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation : Stone, Glass, Tile, Ceramic, Porcelain, Fiberglass SurfaceRecommendation1 : Concrete SurfaceRecommendation2 : Stone SurfaceRecommendation3 : Masonry UnitCount : 30 UnspscCode : 27112800