3J Threads Outside & 5C Threads Inside No need for second collet chuck! Simply screw any 5C collet into the 3J collet adapter. T.I.R .0005" Made in the U.S.A. One piece construction with full clamping force. Available in 3J and 16C Changing To 5C Collets. Both NEW Price "Buy It Now" $285.00.
