Specification Brand : AMZ Clips And Fasteners BulletPoint1 : Resin Bonded Cutoff Wheel BulletPoint2 : Designed for steel cutting use only.Never use these wheels for any other applications.Never Use On Fiberglass BulletPoint3 : Diameter: 3" BulletPoint4 : Thickness: 1/16" BulletPoint5 : Arbor: 1/4" BulletPoint6 : Grit: 54 BulletPoint7 : RPM: 25,000 BulletPoint8 : 10 Per Package ConstructionType : Grinding ExternallyAssignedProductIdentifier1 : 0888742070891 ExternallyAssignedProductIdentifier2 : 888742070891 ItemName : AMZ Clips And Fasteners Depressed Center Cutoff Wheel 4" Dia. ItemPackageQuantity : 1 ItemTypeKeyword : abrasive-cutoff-wheels Manufacturer : AMZ Clips And Fasteners MaximumRotationalSpeed : 25000 rpm PartNumber : AMZ-19711 ProductDescription : General Purpose Depressed Center Wheels Never Use A Wheel That Has Been Dropped Always Wear Full Face Protection When Grinding Use A Guard Covering 50% Or More Of Wheel Diameter Diameter: 4" Width: 1/4" Arbor: 5/8" Grit: 36 RPM: 13,700 25 Per Package