Stoppers are the foundation of any climber’s rack. Their time-proven design incorporates a unique transverse taper that allows them to be placed securely in bottlenecks, flares and shallow seams. Black Diamond Stoppers also happen to have have rounded corners that don’t get hung up on crystals or irregularities inside cracks, so cleaning them is a breeze. This year Black Diamond anodized their Stoppers for easy identification and made them available individually or in a convenient (and less expensive) set that includes Stoppers #4 to #13 and an Oval Biner.