I have a couple of these barrels. I'm after bottom end plunger motor stuff. Also I am chasing a front wheel or hub for 1951 plunger bsa a10, it is half width hub type. They are 8 inch brake and have six large bubbles on back of brake drum when you look from primary side of bike. Also they are not the ones will extra small knock outs and without the extra ribs on edge of brake drum like gold star. Plunger b33/31 is the same. thanks terrykennedy11@bigpond.com.au