Rubber Dumbbell Set 2.5 - 27.5 kg or in SetThe Rubber Dumbbells 2. 5 kg 40 kg for Your Muscle Training If your arms need a significant power boost, these dumbbells are exactly what youre looking for. Featuring a durable cast iron core, they are designed to be virtually indestructible. With a wide variety of exercises available, your training success is within reach. The multiple weight options ensure you can continuously progress and customise your workout. Key Features of the Rubber