From their website:
New to the online store: 50mm diameter disc magnetic bases, and round plastic bases. We also have a new section uploaded to the ‘basing’ section of the shop. We couldn’t think of what to call it so we decided on ‘fiddly bits‘ as that is what it contains. Lots of fiddly bits. Today i have uploaded Chrome steel balls in diameters from 1mm upwards and also Coloured basing sand.