I got these from a guy at a swap meet. The rear looks new, the front looks used but in great condition. I'm not sure the models they will work on. I'm assuming if you know Hodaka's you will know. I do not know much about them. If you want to educate me I'm willing to listen. The ID of the rear sprocket is about 152.8mm or 6.02"  the ID of the front is 0.640"  0.792" or 20.15mm 16.25mm.  Thanks for looking