Strengthen and tone your biceps in the comfort of your own home with the Apex TCB48R 47-inch threaded curl bar. The bar--made of solid steel--is cambered to prevent uncomfortable and sometimes painful stress to the wrists and forearms. The rubber gripping area, meanwhile, is soft and slip-resistant, so you won't have to deal with calluses on your palms. Best of all, the bar accommodates all standard plates with 1-inch diameter holes, so you can add additional weight as your strength increases. Outfitted with a threaded collar system, the bar measures 47 inches long by 4 inches in diameter and carries a two-year warranty.