This set of 5 pairs of dkn rubber hex dumbbells weighing 10kg 15kg 20kg 25kg and 30kg is ideal for increasing your strength for use in a domestic or light commercial environment the dumbbells are solid and durable and have an anti roll hexagonal design the solid steel handles have been ergonomically designed and are knurled to improve grip the iron heads have been coated in high grade rubber to protect them and reduce floor damage and noise