In reply to clipskipper:
> PS. Looking around, I can't see DMM Offsets below size 5, so I'm not sure there is an equivalent. Though the brass offsets might fit the bill
Alloy Offsets are numbered 7-11, but are roughly equivalent to Wallnuts 4-8 and coloured the same, the smallest is the gold one and it is noticeably bigger than the gold Superlight, so a Brass Offset may well be a good bet. Comparing the gold Superlight to my largest I.M.P. (number 4) it's just a tiny bit bigger, so an I.M.P. 5 may be quite close.