An extra index plate for the Joyner Off-Set Jig is very handy as you can keep a solid waste block on one to turn pendants and box lids. Keep the bolt with a waste block on another to turn bottle stoppers, box knobs or fun stuff. It comes with a 3/8″ x 16 tpi bolt and 4 wood screws; which are not necessary when you use the bolt as it will tighten the waste block. If you have the original (silver) jig, these face plates are completely compatible with that kit.
Lathes Specifications: here is a list of lathe spindle sizes and Morse taper if you are not sure.
If you have any questions, email Carl Jacobson at email@example.com or call 503-939-4565, PST.