If anyone needs about 30 or so of the collets in the photo linked below they are yours for free I just hate to toss them out if someone can use them. I have no idea what they are for. They are about 1 9/16" OAL, thread is 1/4" x 28, taper goes from 5/16" to 3/8" all in good shape various sizes as well as some blanks.
Sam