This is 3/8. This is reproduction and has not been used. A little bit of rust on the braking surface.
BSA A10 A7 Rear hub. Full width. B31 B33
BSA A10 A7 spare parts Book 1954-57 Shooting Star R Rocket Swinging Arm Plunger
BSA C11/C25/B25/B44 and A10 Plunger models. Oil Filter 29-7962,82-9071
2x Primary Cover Gaskets - BSA A10 / A7 Plunger/Rigid
BSA A7 A10 PLUNGER FRAME OUTER GEARBOX COVER GASKET 67-3032
5 Surflex CLUTCH PLATES Italy BSA A7 A10 plunger C10L C11G C12 3 spring 67-3242
