Had an old spool of ABS which was both wider than usual (100 mm) and had a narrow center hole (32 mm) that I wanted to use up on Creality K1. Neither of existing narrow models fit as most are too short and/or are threaded so won't fit stock Creality nut (or back slot on K1).

Printed in PETG using tree supports (slotted bit only, not needed on the top part) with 3 perimeters and 5 bottom layers.