HURI Gas Fuel Tank Tap Petcock Valve Switch for Honda CB900F Super Sport CB650 Rebel 250 450 CMX250 CMX450C TRX200SX TRX250 TRX250X TRX300 FourTrax TRX300EX ATC250ES Big Red ATC250SX ATC350X Replacement parts,non original Nut threading is 18mm x 1mm,24mm hex nut. Note:Inner screw size is 16.5mm, not 18mm Package include 1pc petcock + 1pc HURI pocket tape Note:you could apply for a full refund if you didn't receive HURI branded pocket tape.