The new batch of 5.1mm and 6.2mm wheels have been advertised in Journal 4/26 and will hopefully be in stock very soon. However, there is an error on the table in the Journal on page 6.
Items NGSB0300 6.2mm Wheels Pack of 4 and item NGSB0320 5.1mm wheels pack of 4 these are priced at £5 per pack and not £4 as advertised in the journal.