HHIP 3900-0007 11 Piece R8 Collet Set (1/8-3/4 Inch By 16THS) 11 Piece Set
Hardened and precision ground to close tolerance. Made of high grade tool steel. Precision Ground to close tolerance. Internally Thread ed: 7/16" -20. Run out is 0.0007". Date First Available : July 11, 2013.