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For sale is a lot of used Hardinge collets. Looks like they are size 3J, though I am not 100% sure (see pictures next to the ruler). Most have signs of use, none seems to have gouges or other serious defects. Surplus property of Fermilab.
Total is 27 pieces: 26 round pieces -- 1/8 through 1 3/4, with 1/16 interval, MISSING 1.0 inch. That is: 1/8,3/16,1/4,5/16,3/8,7/16,1/2,9/16,5/8,11/16,3/4,13/16,7/8,15/16,1 1/16, 1 1/8, 1 3/36, 1 1/4, 1 5/16, 1 3/8, 1 7/16, 1 1/2, 1 9/16, 1 5/8, 1 11/16, 1 3/4. Also one hexadecimal piece marked 7/8".
