NOS PreciseBits Precision ER16 collet kit,10collets, nut, wrench, cleaner, case
It had not been opened until I did so for these images. Contains and specifications below. (10) ER16 collets: 3/32”, 1/8”, 5/32”, 3/16”, 7/32”, ¼”, 9/32”, 5/16”, 11/32”, 3/8”. Clamping range: ER16 = 0.039" (1mm ).