For tubing NKT-60: 28, 30, 32, 34, 36, 38, 40, 42, 44, 46 mm – set of 2 ea. per each size
For tubing NKT-73: 38, 40, 42, 44, 46, 48, 50, 52, 54, 56 mm – set of 2 ea. per each size
For tubing NKT-89: 56, 58, 60, 62, 64, 66, 68, 70, 72, 74 mm – set of 2 ea. per each size