What`s difference between pre-cut heavy duty and regular heavy duty?

The only difference between our 3/8" Pre-Cut Heavy Duty Rubber Rolls and our 3/8" Heavy Duty Rubber Rolls is that the Pre-Cut Rolls only come in select sizes. They are 10', 15', 25', and 50'. Our standard product can be ordered in any size with the minimum cut being 15'. Our Pre-Cut Rubber Rolls also ship faster with lead times of 1-3 business days.