These cogs are laser-cut from1300 micron thick cardboard.
There are ten large ones (1 inch across) and twenty small ones per set.
There are five different patterns allowing you to mix and match,
Each set is enough for ten standard bases (assuming you want to use one large and two small per base).
I used this set to base my Techpriest Enginseers and their servitors
The cost is R50 per set, should you be interested. This is for the cardboard only, not the bases.