Specification Brand : MAGNATE BulletPoint1 : 2-Flute MicroGrain Solid Carbide; Down Cut; 1/4" Cutting Diameter; 3/4" Cutting Length BulletPoint2 : 2-1/2" Overall Length; 1/4" Shank Diameter BulletPoint3 : Solutions for manufacturers, fabricators, display and cabinet professionals BulletPoint4 : U.S.A. Corporate headquarters and warehouse, located in new York BulletPoint5 : Commitment to offer the highest consistent quality and innovative products ExternallyAssignedProductIdentifier1 : 0637881821457 ExternallyAssignedProductIdentifier2 : 637881821457 ExternallyAssignedProductIdentifier3 : 00738685615102 FinishType : Finish IncludedComponents : 1 Amana Branded Tool ItemName : Magnate 2145 Slow O-Flute Spiral Router Bits - Down Cut; 1/4" Cutting Diameter; 3/4" Cutting Length ItemPackageDimensions_Height : 3 inches ItemPackageDimensions_Length : 4 inches ItemPackageDimensions_Width : 4 inches ItemPackageQuantity : 1 ItemTypeKeyword : spiral-router-bits Manufacturer : Magnate Material : Carbide MeasurementSystem : Inch ModelNumber : 61510 NumberOfFlutes : 1 PartNumber : 2145 PowerSourceType : PowerSource ProductDescription : This micrograin solid carbide spiral bit is designed for hardwoods, acrylics and phenolics. In case a bit doesn't come with a speed chart. You may try the following suggestion. This is merely a guideline to start, result likely varies due to the varieties of edge and material hardness: Run 24,000 rpm maximum for 1" overall diameter router bits; Run 18,000 rpm maximum for 1-1/4" overall diameter router bits; Run 16,000 rpm maximum for 2-1/4" to 2-1/2" overall diameter router bits; Run 12,000 rpm maximum for 3" to 3-1/2" overall diameter router bits; ProductSiteLaunchDate : 2007-06-29T21:58:10.000-00:00 SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation : Plastic UnitCount : 1