Accurate nFinite Rope Adjuster w/ Mainline 2012: The ultimate tool for rider positioning on the wake is here, the Accurate nFinite Rope Adjuster with Mainline is the only device that allows riders to dial in their rope length with infinite possibilities. A durable fiberglass casing surrounds the tri-aluminum tightening system and the nFinite Rope Adjuster is easy to use for any rider in the boat. Equipped with an 80', color coated rope; dialing in your length will lead to a better pull.