Laundry rack parts / Pyykkitelineen osia. Pipe diameter 16.5 mm, wire diameter 4.5 mm. Suitable for Finnish Sini laundry rack models and some others. You can use hard materials such as PLA, but it's recommended to use a bit softer material, such as hard TPU. Links to 3D models: https://a360.co/2U9oYh5 (end cap with wire attach) https://a360.co/2U9ppIf (end cap) https://a360.co/2FMFnUH (wire guide) If there is loose wire on your rack, check this fix by FMMT666: https://www.youmagine.com/designs/laundry-rack-repair-kit