1/8-3/4" BY 16THS 11 PIECE R8 COLLET SET WITH FREE T-SLOT CLEANER (3900-0007)
11 piece R8 collet set (1/8-3/4" BY 16ths). 3900 0007 V - YouTube. Includes a free T-Slot Cleaner. Run out is 0.0007". AIR, POWER & HAND TOOLS. Precision ground to close tolerance. Internally threaded: 7/16" -20.