There are pull-ups, and then there are really hard pull-ups. Remove the stability of a stationary pull-up bar and grab a pair of fully articulated handles and it will feel like a completely different exercise, one that makes you feel like you have the upper body strength of a chihuahua. So, if you think you can haul your body weight into the air with the best of them, opt for these on a Pro Series cage, a Performance Series cage equipped with the optional Pro Style Top Crossmember, or a Continuum rig equipped with the Pro Style Top Member for Continuum, and find out what stabilizing muscles you haven’t been using.