Rough Country?ÇÖs 7 Degree Tapered Reamer aids in the installation of ball joints or tie rod ends to spindles. This must have tool features a tapered design offering three 120 degree flats and is constructed of an all durable construction. Best of all, Rough Country?ÇÖs 7 Degree Tapered Reamer has a 1/2in shank that can be used with a wide range array of tools.