This points seal installer for your Triumph motorcycle keeps from tearing your oil seal when installing your timing cover. You won't know if you tore your seal until after you have reinstalled your points plate and timed the engine, if you have a leak oil will get past the seal and leak into the dry timing housing.
This tool threads into the end of your cam before you fit your timing cover back on, and the taper helps easily guide your cover in place while protecting the oil seal.
This tool is for early Triumphs 1963 up to and including early 1968, as it has BSF (British Fine Standard) threads. There is a similar tool with different UNC threads for late 1968 and up Triumph motorcycles, see related products below.