The Washer,plug,drain 12 is the lowest priced item on this Gasket Kit B schematic.
The O-ring,9.6x2.6 is the most widely applied product in the VFR750F INTERCEPTOR 1989 (K) SWITZERLAND / ASV KPH MG GASKET KIT B ( four times ).
The Honda GASKET KIT B has twenty-six products enlisted in the schematic.