Pro Series Stage I Billet Single Disk Torque Converter Converter Diameter - 245mm - 9 3/4" Available in stall speeds from 3000-4400 rpm Furnace Brazed Hand TIG Welded Torrington Bearings Billet Front and Billet Piston Flanged Impeller Hub for Anti-Flex Durability Hand Assembled to Exacting Tolerances