All our production is produce from pure aluminium And it produce bu machine hydrolic We had many size it begin from 16cm to 60cm And we had many package for that set 6pcs begin from 16cm to 26cm 8 pcs begin from 16cm to 30cm 4 pcs begin from 26cm /28cm/30cm/35cm 5 pcs begin from 28cm/30cm/35cm/40cm/45cm 5pcs big size from 40cm/45cm/50cm/55cm/60cm.