For the wire shelves I have in my office, these clamp onto the pipe legs on them to hold headphones or wires/cables for me. I printed them in just pla with 40% infill (which is only really in the arm of the object the resat is pretty much walls) I included a square hole for if you are hanging something that might be heavier to be able to wrap a cable tie thru and wrap around the whole clamp and pipe to give some added stay in place force. Nice thing is, it can also be spun around where you clip it on to get the arm out of your way as needed. My use case shelves measured 25.9mm I downsized it to 25mm on the clamp and was happy with how well it preformed.