1. A screw to attach your camera to the QwkMnt PLATE (1/4"-20 with 3/8" (or 10mm) shaft is most common). I designed the PLATE to work with common styles, like these:
2. A M3-10 (3mm diameter, 10mm length) countersunk screw to attach the QwkMnt LOCK to the BASE (like this one
(If you have a 3D printer, you probably have an extra M3-10 handy)
3. Optional: A metal 1/4"-20 nut (the printed nut works great, but if you may use a metal nut if you wish!).