GSD Speed Rope. Comes with a crazy guarantee. Perfect for Crossfit and crushing double unders. Why this speed rope? First off you are the boss of you... Do what you want! But if you're still interseted. It's a great speed rope to master double unders and your purchase goes to help good causes too! Secondly, our speed ropes have metal bearings that are stronger, faster and will last longer than all plastic cheap ropes. We also offer a No risk, 200% Satisfaction Gaurantee You will love it or we will refund the price and buy you a rope of your choosing for 90 days! Let's click it and ship it now, it's gonna feel great.