The Pro-Style dumbbells are great for performing bicep curls, lateral or frontal movements that grow the arms, triceps exercises as well as back exercises. The dumbbells are constructed using urethane/rubber weighted fixed ends & a solid steel handle bar with knurled textured hand positioning that provides a secure grip. They are chrome plated for excellent durability & each of them weighs 30kg (66lbs). The dumbbells are supplied in pairs.