The York Neo Hex dumbbells are constructed from cast iron and coated with durable neoprene. They comprise of an ergonomic handle for extra comfort and hexagonal heads with flat sides that prevent the dumbbells from rolling away. They York Neo Hex dumbbells are easy to clean and weigh 5kg (11lbs) each. They are a perfect exercise aid for those who want to gain strength and tone the muscles. The dumbbells are sold in pairs.