Specification Brand : Foredom BulletPoint : Sold on Amazon BulletPoint1 : Zirconia grain Cut-off Wheels BulletPoint2 : Long life and reinforced BulletPoint3 : Lasts up to 3 times as long as an aluminum oxide wheels BulletPoint4 : Use on a 3″ or 4″ cut-off grinder BulletPoint5 : Durable and long lasting BulletPoint6 : For industrial/occupational use only. Not for consumer sale or use Capacity : 12.75 millimeters Color : Black CompatibleDevices1 : Drilling Machine CompatibleDevices2 : Lathe CompatibleDevices3 : Milling Machine CompatibleDevices4 : Grinding Machine CompatibleMaterial : Metal ConstructionType : Grinding ExternallyAssignedProductIdentifier : 50051144777179 ExternallyAssignedProductIdentifier1 : 682488025623 ExternallyAssignedProductIdentifier2 : 0682488025623 ExternallyAssignedProductIdentifier3 : 00682488025623 GpsrSafetyAttestation : 1 IncludedComponents : Shark Industries Mandrel With Only a 1/4" Shoulder Screw IndustryStandardIdentifier : 77717 ItemName : Mandrel, Screw Type, 7/16” dia. Head/Shoulder x 1/8” dia Arbor Screw with 1/4” Shank ItemPackageDimensions_Height : 0.762 centimeters ItemPackageDimensions_Length : 18.796 centimeters ItemPackageDimensions_Width : 9.652 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : abrasive-mandrels LockType : Manual (keyless) Manufacturer : Foredom Material : Ceramic Material1 : Alloy Steel Material2 : Chromium Vanadium Steel MaximumRotationalSpeed : 18000 rpm MeasurementSystem : Imperial MetalType : Alloy Steel ModelName : Shark Industries Mandrel With Only a 1/4" Shoulder Screw ModelNumber : 37S NumberOfItems : 1 PackageLevel : unit PartNumber : A-M84 ProductDescription : Foredom A-M84 Mandrel, Screw type, 1/4" Shank. Screw type mandrel with 1/4" shank for mounting accessories with 1/8" arbor holes. For mounting wheels, stones, felt bobs, small buffs, and other unmounted accessories with 1/8" arbor holes. 2-1/8" overall length. 20,000 RPM Max Speed.Screw type mandrels come with different shank sizes and arbor hole dimensions. When making your selection, be sure the screw capacity of the mandrel matches the arbor hole of your accessory. Also check to see that the diameter of the mandrel's shank fits your handpiece collet (or chuck). The right fit will help to insure safety and keep your accessory running true. Maximum and recommended speeds depend on the type and size of accessory, as well as the mandrel in use. The ratings we publish for our mandrels are based on an 1" overhang with an accessory that weighs under 1 gram, and is smaller than 1/2" in diameter. As a general rule, smaller accessories and mandrels can be used at higher speeds than larger accessories and mandrels. It is a good idea to follow the recommendations that come with both the accessory and the mandrel you are using. ProductSiteLaunchDate : 2014-11-10T20:35:35.376Z Size : 1/4" Style : 18000 rpm SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 31161500