A little helper I designed to aid in truing wheels while they are still i nthe frame. Perfect if you dont own a truing stand or like me, want something small to bring on roadtrips to fix up your wheels after you cased that gap jump...
They'll fit seat stays up to 20 mm wide or so, depends a bit on their shape. In addition you'll need a M6 tap to thread the hole and the tip, a M6 bolt and a rubber band.
ANy PLA, ABS, ASA, doesn't really matter
Print adapter lying on side, tip standing up.