Part No. Normial Size Inner Diameter Outside Diameter O.D After PVC Coated Length Of Each Roll mm mm Interlocked Squarelocked M SS-10 3/8" 12.5 15.7 18.0 16.6 50 SS-11 1/2" 15.7 19.1 21.3 20.0 50 SS-12 3/4" 20.8 24.3 26.7 25.5 50 SS-13 1" 26.0 30.0 33.2 31.6 30 SS-14 1-1/4" 35.0 40.0 42.2 42.0 30 SS-15 1-1/2" 40.0 45.0 48.0 47.0 20 SS-16 2" 51.0 56.0 59.6 59.0 10