CNC ER collet chuck tool holder is one of our signature product line and continuously drawing high customer satisfaction ratings. Click below to browse our selection of 5 micron ER collet chuck with standard collet nut and mini collet nut in variety of popular taper spindle including dual contact CAT40, CAT50, BT30, BT40, HSK63A, NMTB30, NMTB40, NMTB50, R8, Morse Taper, and straight shank. Shop today and get your items fast with same-day shipping!