Ever try to work on a car and the hood just keeps falling down because the gas struts have gone bad? Print this out and it clamps on to most sizes of strut/piston/prop and it'll hold it up or keep it from falling if you don't trust it. I printed with as many perimeters as possible and 100% infill. I included a pause at the right layer to drop in a single M5 nut on the body of it, and then a M5 screw press fits into the knob part. Let me know if you have any trouble with it and I'd be happy to adjust the models for you. I also added a little piece of rubber in the slot of a couple that really kept it from sliding on the piston.