Updated Design! The heads of the cast metal dumbbells are encased in thick rubber to prevent damage to the weights, floors and other equipment in the exercise facility. Hexagonal head design keeps them from rolling away. Ergonomic, knurled handles provide a comfortable, stable grip. Durable construction that is ideal in frequent-use settings. The most popular weight ranges available. Sold in pairs. Racks available. Features: Sold in pairs in 24 popular weights, 3 - 100 lbs. Solid steel knurled ergonomic handle with zinc coating for improved grip, comfort and durability Raised numbers make each dumbbell easy to identify by weight Hexagonal head design prevents the dumbbell from rolling away so they stay within easy reach Kits Contain One Pair Each: 5,10,15,20,25,30,35,40,45,50 lbs. (20 single dumbbells/10 pair) Kits Contain One Pair Each: 55,60,65,70,75,80,85,90,95,100 lbs. (20 single dumbbells/10 pair)