Sizes: 1/8 to 1" by 16ths: 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". 202-5287 15 PCS 5C COLLET SET. 202-5142 COLLET RACK STAND. Collet locks in position for retaining accuracy in drilling operation, not enough gripping power for milling work.
eBay