1/16-3/4" BY 32NDS 23 PIECE R8 COLLET SET (3900-0009)
23 piece R8 collet set (1/16-3/4" by 32nds). Hardened and precision ground to close tolerance. Internally threaded with a 7/16"-20 thread. Run out is 0.0007". AIR, POWER & HAND TOOLS. Made of high grade tool steel.