Well the important bit is that these are compatible with lego and cobi blocks.
Each dalek is made up of 9 pieces, 3 of which are tiny(eye and guns).
They are made by a company named 'character building' which is ironic as all the daleks come already made!
The only other thing that I find bad is the price, 45 pieces at the RRP is twice as much as even lego would dare charge.Thank god amazon prices are usually lower than RRP.
So that is why I knocked the rating down, otherwise my son loved to play with them and stick lego heads on instead of dalek ones!
The heads do swivel round as well!
Hope this helps