4 Hi-Precision Cartridge Ball Bearings per rope will make a huge difference a few dozen or even hundred reps in a workout.
The New Gorila 6,5" long x 5/8" thick tapered rotating handgrips are made from an indestructible 1/8" thick nylon resin. The bearing system itself is specifically designed for elite jumpers and high level competitors in Sport of Fitness. That's why we are very confident the Gorila Black Mamba will exceed your excpectations for durability and efficiency!
Recommend use on rubber or nonabrasive surface.