Savior Fuel Tank Switch Valve Petcock for Honda CB400A CB400T CX500 TRL200 XR185 XR200 High quality Fuel Switch Fit Honda XL250S XL350 CB400A CB400T CX500 TRL200 XR200 Petcock Outlet OD is 6mm Nut threading is 16mmx1.5mm Hex nut is 22mm