Find standard and Olympic curl bars that will add a new dimension to your weight lifting routine. The various curling bars will allow you to vary your grip on the bar to target your muscles from different angles. This variation will help to add muscle mass to your arms. The EZ Curl bar is the most popular curling bar, but the super curl bar is a close second.
There are several fitness equipment manufacturers that make a quality curling bar. Name brands include Body Solid, CAP Barbell, and XMark Fitness. You will be sure to find the bar that you are looking for with a selection like this.