Amazon.com.au:Customer reviews: Bear KompleX Aluminum Speed Jump Rope, Great for Crossfit, Double Unders, Boxing, Fitness, and Conditioning, Easy and Fast Setup for On The Go, Workout Gear for Both Men and Women, Free Carrying Case
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For some, this is a good product, but for me it is too fiddly, and it seems you have to cut 3mm steel windings with I don't know what if you don't want loose ends flayling every where. I sent mine back.