The Reebok hand weights can be used for biceps curls, lateral or frontal movements that challenge the arms, triceps exercises as well as back exercises. They weigh 1kg (2.2lbs) & are great for building strength, muscle definition & agility. These iron dumbbells are coated with vinyl for enhanced durability & have a square shape to prevent rolling away when set aside. These grey dumbbells are sold as a pair.