Description Our stylish 12 sided Solid Steel, Polyurethane encased dumbbells represent the best in class, commercial grade product of its kind being manufactured today.With a sleeve design that extends through the head of the dumbbell and is permanently welded, the structural integrity is unsurpassed. The uniform 34mm Solid Steel hard-chrome handle with its precision machined, medium knurl makes each size dumbbell from the smallest to largest, as durable as it is comfortable to use.