Specification Brand : Star USA BulletPoint1 : High Speed Steel BulletPoint2 : Cutting Diameter: 5/16" BulletPoint3 : Shank Diameter: 1/4" BulletPoint4 : Overall Length: 1-5/8" BulletPoint5 : Degree: 90 CuttingAngleString : 90.0 degrees ItemName : 5/16" HSS 1-Flute 90 Degree Countersink - USA ItemTypeKeyword : combined-drill-countersinks Manufacturer : Star USA Material : High Speed Steel NumberOfFlutes : 1 PartNumber : 85115142861 ProductDescription : Ideal for chamfering deburring and countersinking. The large positive rake and single flute construction provides a smooth surface finish on a wide variety of materials. The versatility of this tool should increase productivity on all general purpose applications. ProductSiteLaunchDate : 2011-12-25T08:00:00.000Z UnitCount : 1 UnspscCode : 20121600