This is a brand new aftermarket fuel valve petcock petcock outlet OD is 7 mm Nut Threading is M18 x1 it is compatible with Honda Part # 16950-mm8 - 020 fit models; Honda TRX200SX FourTrax of year 1986 – 1988 Honda TRX250 Four. Trax of Year 1 985 – 1988 Honda TRX250 x Fourtrax of year 1985 – 1992 Honda TRX300 Fourtrax of year 1988 – 2000 Honda TRX300EX of year 1993 – 2008 Honda ATC250ES BIG RED of 19 year 85 cm 1987 HONDA ATC250SX of year 1985 – 1987 HONDA ATC350 x of year 1985 – 1986 Honda VT500 C Shadow of year 1983 – 1986 Honda VT500ft Ascot of year 1983 – 1984. Honda VF500 0 F intervention of year 1984 – 1985 Honda VT1100 C SHADOW of year 1987 – 1996