Nlife Speed Jump Rope. Premium Quality. Best for Crossfit, Boxing, MMA Training. FREE Extra Cable, Bearing Set, Carrying Bag ULTRA SPIN & MORE GRIP: Jump Rope A (Advanced), with lightweight steel, features an ultra spin mechanism that puts out incredible rotation and speed as you perform double unders or speed jumping workouts. The Pro Grip handles help eliminate friction, while the kink-free steel cord with vinyl coating adds speed and durability. EASILY ADJUSTABLE: 9.82ft height adjustable speed rope designed to deliver unmatched speed and can be shortened to increases intensity and technique. EFFICIENT MOVEMENT: fluid and precise movement with technically superior ultra spin mechanism for unmatched acceleration. DURABLE LIGHTWEIGHTMATERIAL: Light steel rope designed to resist binding and minimizing friction to allow maximum rotation speed. REPLACEMENT GUARANTEED: With a full one-year limited warranty and a 120-day replacement guarantee. Plus, extra cable, screws, capped cable ends and free carrying bag along with this comparable jump rope. Worth your choice!!!