This a OE Lucas Brake Light Switch, Thread size 1/8x 27 NPTF. Austin Mini 1959 to 1976, Jaguar E-Type 1961 to 1971, MGB 1963 to 1967, Triumph TR3 from TS60001, TR4 to CT26929, Sprite, Midget 1958 to 1967, Mini to 1976.
Fits: Austin Healey Sprite 1958 to 1967 Austin Mini 1959 to 1976 Daimler SP250 1960 Jaguar most models 1956 to 1967, check the thread count. MG 1100 1962 to early 1967 MGB 1963 to 1967 MG Midget 1962 to 1967 Triumph TR3A from TS600001 Triumph TR4 to CT26929
