New MTN 2 3 4 5 6 7 8 9 lbs (1pc) Neoprene Coated Cast Iron Dumbbell - Lowest Price, Fastest Priority Shipment High quality Neoprene Coated dumbbell set. Made of high quality solid cast iron. Neoprene coated to protect dumbbells from elements Available weight: 2, 3, 4, 5, 6, 7, 8, 9 lbs Material: Solid cast iron.