Janome Spool Stand Unit. This optional spool stand can be permanently mounted on the back of Janome machines. It contains space for two thread spools, and features a telescoping, retractable thread delivery stand. The two pins spool stand attaches easily to the handle of your machine. When using multiple colors of embroidery thread it makes for trouble-free embroidery, as it allows you to set out your colors as you sew. Fits Janome models : Horizon Memory Craft 9400QCP, Skyline S9 Genuine Janome parts #859429016.