0.016 0.16 0.394/0.590/0.787/0.984IN, the second category is 0.02 0.2 0.394/0.590/0.787/0.984IN, the third category is 0.02 0.24 0.394/0.590/0.787/0.984IN, the fourth category is 0.024 0.24 0.394/0.590/0.787/0.984IN, and the fifth category is 0.028 0.28 0.394/0.590/0.787/0.984IN.
The springs boast a smooth surface, excellent strength, high ductility, remarkable durability, and optimal tension. 0.016 0.16 0.39/0.59/0.79/0.99IN, the second category is 0.02 0.2 0.39/0.59/0.79/0.99IN, the third category is 0.02 0.24 0.39/0.59/0.79/0.99IN, the fourth category is 0.024 0.24 0.39/0.59/0.79/0.99IN, and the fifth category is 0.028 0.28 0.39/0.59/0.79/0.99IN.