this holder is designed to go on this base. https://www.printables.com/model/241088-arducam-pi-camera-caseholder this is the camera that i used however other cameras should be compatible  https://www.amazon.com/Raspberry-Camera-Vision-IR-Cut-Longruner/dp/B07R4JH2ZV/ref=sr_1_4?crid=15D51ZAP2FN4Z&keywords=raspberry%2Bpi%2Bir%2Bcamera&qid=1673738545&sprefix=raspberry%2Bpi%2Bir%2Bcamera%2Caps%2C99&sr=8-4&th=1 all the hardware needed to attach the camera to the mount is provided with the camera.