This is a wheel cylinder for Triumph TR3 from TS34404 to TS56376, Triumph TR4 from CT5656 (wire wheels), CT5783 (disc wheels), Triumph TR4A, Triumph TR250, Triumph TR6 with a .70" bore and Slotted Piston. Can be used for the TR3 from TS34404 to TS56376 that originally had the 5/8 cylinders, .70" is the closest bore size.
