Metal miniball rod end bearing ball joint is the swivel used on modern Conn (and a few Bach) rotary valves. Sold as a single bearing. Two required if you plan to replace both ends of the rod. Uses screw number 126585. These are fitted to these models: • Bach 42BOF Trombone (OpenFlow Valve) • Bach A47BO Trombone (Artisan w/OpenFlow Valve) • Conn 1FR Flugelhorn • Conn 7D Horn • Conn 8D Horn • Conn 9D Horn • Conn 10D Horn • Conn 11D Horn • Conn 88H Trombone • Conn 88HCL Trombone • Conn 88HNV Trombone • Conn 88HO Trombone • Conn 89H Trombone • Conn 62H Bass Trombone • Conn 62HI Bass Trombone • Conn 62HCL Bass Trombone • Conn 110H Bass Trombone • Conn 112H Bass Trombone • Conn 52J Tuba