This is a threaded cap that slips onto the Adjustable RC Car Stand w/ Shocks Station (https://www.thingiverse.com/thing:4115303). This helps the top threaded piece be more stable and not wobble without having to use any glue any parts.
IMG_8996_2.HEIC | 1.9MB | |
IMG_8997.HEIC | 2.3MB | |
RC-Stand-Top-Nut.stl | 148.1KB |