assembling a 1957 7.5 Scott Atwater I dropped a few of the loose Crank needles. the earlier 5hp are the same. .094 dia . .482 long with tapered ends. Good used is fine or would buy a set of 24. thank you. Incase anyone is interested the rings for a 1957 7.5 Scott-Atwater is the same as a Martin "60" or "75"