Ultra Speed Cable jump ropes are the only ropes I"ll use at my gym. They are hands-down the fastest and most durable ropes I"ve found. I"ve tried many different jump ropes and no matter what the price, they always seemed to break. The Ultra Speed Cable ropes hold up better than anything else and they are really affordable too I highly recommend these ropes. Tommy Hackenbruck, 2nd Fittest Man on the Planet. CrossFit Affiliate Owner Avid Cross Fitter and fitness enthusiast. Former Linebacker on the 2004 Utah Fiesta Bowl Team Sold individually. Ultra Speed Ropes are made for indoor use only. DO NOT USE ON ABRASIVE SURFACES.