Specification Brand : Pferd BulletPoint1 : CAST cut BulletPoint2 : 1/4'' shank diameter BulletPoint3 : 1/2'' X 1'' bur diameter x length BulletPoint4 : 2-3/4'' length BulletPoint5 : Suitable for electric nail drill, carving machine, machinery supporting assembly with a 3/32" collet Color : Silver ExternallyAssignedProductIdentifier1 : 097758241090 ExternallyAssignedProductIdentifier2 : 0097758241090 ExternallyAssignedProductIdentifier3 : 00097758241090 ItemDisplayDimensions_Length : 42 millimeters ItemName : Carbide Bur - Cylind. (Plain End), CAST Cut 1/2" x 1" x 1/4" Shank - SA-5 ItemPackageDimensions_Height : 0.276 inches ItemPackageDimensions_Length : 4.016 inches ItemPackageDimensions_Width : 0.866 inches ItemPackageQuantity : 1 ItemShape : Sa-5 ItemTypeKeyword : cutting-burs Manufacturer : PFERD Material : tungsten carbide MeasurementSystem1 : Imperial MeasurementSystem2 : Metric ModelName : SA-5 ModelNumber : 24109 NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : 24109 ProductDescription : JINGLING 30Pcs 2.5mm SPHERICAL CONCAVE Head Diamond Mounted Point Grinding Tip Lapidary Carving Tools Code 25Q Product Specification: Product Name: Diamond Grinding Head, Gemstone carving tools, 2.5mm Diamond carving burrs Head Diameter: 2.5mm (Close to 3/32") Total Length: 42mm (1-21/32") Shank diameter: 2.35mm (3/32"). Suitable for electric nail drill, carving machine with a 3/32" collet Grit: 150 Medium Quantity: Total 30Pcs Head Shape: SPHERICAL CONCAVE Head Speed: 2800-50000RPM, electric grinder speed as high as possible Product use: Apply to stone carving, jade carving, gem peeled, bone carving, egg decorating, glass carving etc Used for sculpturing, dressing, precision grinding and internal grinding carbide in ceramic, glass, precious stone, alloy and many the abrasive materials The diamond mounted point can be installed on the electric grinder, hanging mill and hand electric drill (not included here). Never use drills while machine is in hammer action Use with water as a lubricant Note: carving must use cold water to cool the workpiece and the grinding head polishing, moment also can't do without water We can list any size (head diameter from 0.8mm - 16mm) amount of this product Just a friendly reminder: The Shank diameter of grinding bit is 2.35mm (close to 3/32") There are two different collet sizes for Dremel: 3mm (1/8") or Universal 3-jaw chuck If your chuck of Dremel (models 4300-8050) has an Universal 3-jaw chuck, then the grinding bit can be installed directly However, it is NOT suitable for dremel with 3mm 1/8" chuck (such as:models 3000,4000) If your chuck of Dremel is 3mm (1/8"), maybe you need add the Universal 3-jaw chuck for Dremel ProductSiteLaunchDate : 2017-10-21T08:00:01.000Z Size : Head Diameter: 2.5mm (3/32") StreetDate : 2017-10-21T00:00:01Z Style : Cylindrical bur with plain end (uncut) – Shape A SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 27110000