Globe Marine DriveSaver&reg; Model 404A Marine Drive Coupling for ZF, Technodrive, Twin Disc and Borg Warner Transmissions 4" Flange Diameter, 4-Bolts, 3/8" bolt diameter, 3-1/4" bolt circle, 2-1/2" pilot diameter, male/female configuration, 5" coupling diameter, 1" coupling thickness 550 ft/lb Engine Torque Rating Made in the USA, Grade 8 Hardware Fits many ZF, Twin Disc, Newage PRM, Technodrive, Borg Warner, Velvet Drive and Crusader transmissions