Fits a lens with a 52mm filter size.Spring shown in white for reference only, it is not part of the STL files.Adhesive required to hold it together. Place adhesive in the four loctions shown by the red dots in image LensFilterSizeASMGlueing.png.You will need to purchase a 0.5X5X25 spring. I used part number B07D769TFZ found on Amazon.ca.Swirl and Plain top included.LensFilterSizeASMExploded.png, LensFilterSizeASMGlueing.png and LensFilterSizeASMSlic3r.png are generic pictures.