A speed rope built with aluminum handles, 360-degree precision bearings and a 2.5 mm steel cable for a fast, consistent spin. Cable length is adjustable, so the rope can be set or trimmed for different users and training styles without swapping the handles. The bearing assembly at the connection point lets the cable rotate freely during double-unders and conditioning circuits. Think about the surface you train on, since a thin 2.5 mm cable wears fastest on rough concrete and grit.Key details:Materials: ["Aluminum alloy", "Steel cable"]Dimensions: Cable diameter 2.5 mm (0.1 in); adjustable length