18 pieces. 4 x M3 screws or 3mm rod. 3 x 1 meter bright white LED strips. 1 x 3 port USB hub. Easy to print. No painting. Some glue required. I saw a lot of LED arch or bridge lights online and I wanted to make my own. I combined three small arches into one model in order to create a triple bridge or shadowless photography light. I used three bright white LED strips which are powered by one triple port USB hub. Note: This is a failed concept and I might remix this concept in the future because the LED light strips are not bright enough. It works ok when taking pictures of small objects in very dark areas and I am not a professional photographer. The foldable arches get in the way of the photo sometimes and when both sides are folded in to meet the middle arch the whole thing is wobbly.