Most useful to prevent damage to the carriage when the knitting machine is being carried or transported.
It comes with the knitting machine, but is often lost or misplaced.
It is item is Extra to my needs. A metal Carriage lock for the Studio Standard gauge. It fits a SK700 mainbed for sure. I have tested it. The carriage is secured on the left side of the knitting bed.
May fit other models, I can’t verify. This an item that is often forgotten about, until the need to transport the machine.