Rail buttons or guides for model and high power rockets launching from 1010 or 1515 size slot aluminum extrusions. ( https://www.8020.net/ ). These are not as strong as the delrin or nylon versions but hey you can easily make this yourself. The 1515 guides are set to use 8-32 screws but could be opened up a bit for 10-32 screws with a 3/16" drill bit.
rail_buttons_1010_rev1.stl | 136.6KB | |
rail_buttons_1515_rev3.stl | 135.6KB | |
rail_buttons_rev1.scad | 4.7KB |