TRIUMPH T120 TR6 650cc unit STAINLESS STEEL ENGINE/GEARBOX BSF ALLEN SCREW SET PLUS 2 ALLEN KEYS. Specifically to fit Triumph T120 and TR6 650cc unit construction 1963-1968 made in England. This British made quality STAINLESS STEEL allen screw set contains every screw needed in the correct screw size to replace both the engine and the gearbox screws.