On / Off / Reserve. Built in fuel filter. Fuel exits to the side. Comes with rubbery sealing washer for a tight fit with no leaks. Threading = 18 x 1.0mm 22mm hex nut. Ribbed fuel outlet perfect size for use with either 3/16" or 1/4" fuel line. Fits Honda: TRX200 SX - 1986-1988 CRF230L - 2008-2009 CRF230M - 2009 ATC250 ES/SX - 1985-1987 CB250 Nighthawk - 2006-2008 CM250C - 1982-1983 CMX250C Rebel - 2006-2009 TRX250 - 1985-1987 XL250R - 1982-1983 TRX250X - 1992 TRX300 2&4 WD - 1988-1999 TRX300/FW - 1988-2000 TRX300EX Sportrax - 2006-2008 TRX300X Sportrax - 2009 XL350R - 1984-1985 FT500 - 1982-1983 XL500R - 1982 VF500F Interceptor - 1984-1985 VT500C Shadow - 1983-1986 VT500FT Shadow - 1983-1984 XL600R - 1983-1987 CB650SC Nighthawk - 1983-1985 GL650 - 1983 XR650L - 1993-2009 CB750F Super Sport - 1979-1981 (After VIN# RC04-2010669 & RC04-2116089) CBX1000 - 1979-1981 CB900C Custom - 1980 (After VIN# SC04-2015593) CB900F - 1981 VT1100C - 1995 and probably others. . .