Buddy Lee Aero Speed Jump Rope - Silver Made for ultra speed (5-6 turns per second) and power jumping (double unders) Designed for high intensity jump rope training, making it easy, effortless and fun 6" T-Grade Aluminum Handles for superior quality, durability and look Designed with Buddy Lee's swivel bearing system that is engineered for eliminating friction, drag, tangling and allows smooth turning action in all directions The swivel-bearing wrench is specifically designed to secure and replace the bearings to maintain years of Hyperformance jumping