Rattler Racer Piggin Strings are treated with a specially formulated wax that penetrates into the string fiber. The eye of every string is constructed using a special process that results in an eye that will not turn. Racer eyes are the right size, and hand sewn with rawhide burners for speed and smoothness. Racer strings are 100% nylon which results in a super string that is fast, snappy, and has a great feel. 6 1/2ft.