SULLIVAN PUSH ROD PULL-PULL 12FT KEVLAR RED #521Pull-Pull Systems Pull-Pull setups take a little more time to install than push-pull rods, but yield a strong control system with virtually no play. These are especially popular for rudder and elevator controls in pattern and other competition aircraft. The Kevlar® type is easily installed, strong, light weight and nonconductive. It is suitable for all pull-pull systems. The Steel Cable Type utilizes nylon coated .015 Steel Cable, and is best for scale appearance or minimum wind resistance. It is more difficult to install and adjust than the Kevlar type, and must use turnbuckles to prevent twisting. All hardware except bellcranks and control horns is included.