Radar4 Team Rope Rattler 30’ (9,1m) The Radar4 consists of four strands of twisted nylon and poly fibers around a Coretec nylon core. With a color that makes it easy to see the delivery and the catch, the Radar is sure to get you noticed. Designed for aggressive roping styles, its diameter is smaller in size. Yet the Radar provides great tip feel and accelerated tip action. The Coretec core ensures more loop stability for greater loop control and high percentage catches.