Shift Knob 10x1.25 insert

Created this insert to convert a 15mm universal set-screw type shift knob (Nardi 3200.00.5000) to a screw-on type for Mazda Miata. Slide into the knob,secure with set screw or epoxy, screw onto shift lever.

Recommend printing on .15mm layer height or finer (otherwise the threads may not engage properly) out of PETG for best thermal stability.