It is a planetary gear type iris mechanism with 5 blades. Parts are designed for laser cut, and you can 3d print the parts too. The outer diameter is 150mm,center hole is diameter 52mm, and total thickness is 12mm. Files： https://www.cgtrader.com/monk3947 https://cults3d.com/en/users/Tanerxun/creations https://www.etsy.com/shop/TanerXun
