Made from solid cast iron with a 6-sided anti-roll design and encased in rubber, this Rubber Hex Dumbbell is perfect for the home or gym. The end weights are iron, cast with a through hole. The machined chromed handle fits through the hole and is then welded to the end weight. The final step is to over-mold the rubber onto the end weights. Prevent damage to floors by using these Hex Dumbbells with Rubber Heads and Ergo hand grips. The Ergo design on the handle bars helps to reduce fatigue and maximize comfort. The set includes pairs of 5LB, 10LB, 15LB, 20LB, 25LB, 30LB, 35LB, 40LB, 45LB, 50LB Dumbbells 3 Shelve Dumbbell Rack - Length: 59.5" Height: 39" Width: 21"