Specification Brand : ILOVETOOL BulletPoint1 : Solid Steel Diamond Drill Bits: 30 Pcs glass drill bit set; 5mm diamond drill bits; perfect lapidary supplies for lapidary projects; compatible for Dremel diamond bits BulletPoint2 : Shank Diameter:3mm(1/8"); Suitable for dremel, electric grinder, carving machine with a 1/8" collet,fit for most of rotary tool includes dremel tools BulletPoint3 : 30 Pcs Ball head solid steel burr grinding stone diamond drill bits 5mm Head,perfect for lapidary projects BulletPoint4 : Diamond drill bits Jewelry drill set great for grinding and carving for field stone, ceramics, glass, carbide, tile, marble, jewlry,rock etc BulletPoint5 : This diamond drill bits for glass very highly recommended for crafts, hobbies, home repair, jewelry,lapidary use, modeling, and so much more Color : Silver ExternallyAssignedProductIdentifier : 4339888605158 ExternallyAssignedProductIdentifier1 : 000346423624 ExternallyAssignedProductIdentifier2 : 0000346423624 ExternallyAssignedProductIdentifier3 : 00000346423624 ExternallyAssignedProductIdentifier4 : 00000346000016 FinishType : Uncoated GpsrSafetyAttestation : 1 IncludedComponents : Screw Extractor and Left Hand Drill Bits Set, 10 Pieces ItemName : ILOVETOOL 30Pcs 5mm Ball Shape Diamond Jewelry Drill Bits Rock Carving Tools for Sea Glass Shells Gemstones ItemPackageDimensions_Height : 16.6878 centimeters ItemPackageDimensions_Length : 3.0988 centimeters ItemPackageDimensions_Width : 12.4968 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : masonry-drill-bit-sets Manufacturer : ILOVETOOL Material : Diamond+Metal ModelNumber : LSQCQ-10-TH-ZH NumberOfFlutes : 2 NumberOfItems : 1 NumberOfPieces : 10 PackageLevel : unit PartNumber : HHMZ-YQ5mm-3S-35#-30 ProductDescription : Diamond Drill Bits 30 pcs Diamond Jewelry Drill Bits for Sea Glass Shells Gemstones Compatible for Dremel. Diamond Drill Bits for Glass Diamond Tipped Drill Bit Burrs 30Pcs Ball Shape Diamond Burr - 1/8'' Shank Diamond Ball Burs Stone Carving Bits for Dremel Rotary Tool Product Name:Diamond Drill Bit Burrs,Diamond drill bits for stone Heads Shapes:Ball, Round Heads Diameter:5mm, Solid not Hollow Shank Diameter:3mm (close to 1/8") Suitable for dremel, various carving machine,lapidary equipment, flex shafts with 1/8" chuck,Compatible for Dremel and Other Rotary Tools Total Length: 45mm(1-3/4") Quantity:Total 30Pcs Grit:120 (medium) Premium type diamond coated grit 120, more durable than ordinary diamond drill bit set Recommended speed: 24000 RPM or more. Perfect for Jewelry Design Necklaces Earrings, Pendants, Bracelets with Sea Shells, Beach Glass, Rocks Make Clean Holes in Tiles, Marble, Rocks, Ceramic, Porcelain, Gemstones. Practical - Suitable to be used with electric, cordless hand drills, upright drills, flex shafts, and rotary tools such as Dremel. Use with water - do not run dry. Warm Prompt: 1.On the new tools, must be installed when the tool is to try have to adjust to to use. Other wise the tool is quickly worn out and the carved object are not very smooth. 2.Use with water as a lubricant is better,when you carving. if dry drilling then the diamond on the head of the tool is graphitized by overheating, and it is quickly worn out.