Specification Brand : Star USA Label : Star USA Manufacturer : Star USA MaterialType : High Speed Steel PartNumber : 85119886188 ProductGroup : Single Detail Page Misc ProductTypeName : MECHANICAL_COMPONENTS Publisher : Star USA SmallImage_Height : 21 SmallImage_URL : https://m.media-amazon.com/images/I/31yzRDHJMwL._SL75_.jpg SmallImage_Width : 75 Studio : Star USA Title : Countersinks - Chatterless (6 Flute), High Speed Steel - Individual Sizes 7/8" Dia. 1/2" Shank 60 Deg.