Specification Brand : All American BulletPoint : 100% brand new and high quality BulletPoint1 : I.D. Tolerance of +.0001/.0005 BulletPoint2 : Concentricity of 0 to .0003 Total indicator reading maximum BulletPoint3 : Heat treated to Rockwell C62 to 64. BulletPoint4 : No Counterbored ExternallyAssignedProductIdentifier1 : 0649490629676 ExternallyAssignedProductIdentifier2 : 649490629676 ItemName : All American Type P Bushing, 37/64 ID x 7/8 OD x 1-1/2" L, Drill Bushing C1144 Steel, Heat Treated to Rockwell C62 to 64 Made in USA ItemTypeKeyword : drill-adapters Manufacturer : All American Bushing Material : acrylonitrile_butadiene_styrene_(abs) NumberOfItems : 1 PartNumber : P 56-24-37/64 ProductDescription : All American Drill Bushing are made in the USA from steel obtained from a domestic steel foundry. Our standard bushings are made of C1144 and heat treated to Rockwell C62-64. Concentricity is held at 0 to .0003 T.I.R maximum for ID sizes of 1/8 to ½ and 0 to .0005 T.I.R Max for any other size. A blended Radius on the drill entrance improves drill entry and alignment which prevents tool wear and breakage. All of our products are free of conflict materials of any kind and conform to Reach. ProductSiteLaunchDate : 2014-11-20T08:00:00.000Z UnspscCode : 20111700