HARDINGE 16C 3"EDC MACHINABLE COLLETS EMERGENCY COLLETS 4 PCS MACHINED AS SHOWN 3-1/8 X .100, 3" X .400, 1-1/2 SQUARE 1-1/4 DEEP, 2-3/8 X 1/8" . +++ PINS FOR MACHINING. ***********LOTS OF LIFE LEFT IN THESE COLLETS, AS SHOWN.***************************************************************************************************************************************************************************************YOU WILL NEED OUT SIDE CLOSER************QUESTIONS JUST ASK!!!!!!!!!!!!