Explosive strength needs room to move. Nike Strength Pro Hyperphasic Arms angle roughly 45 degrees away from the rack, opening clear space in front for loaded jumps, banded work and the rest of a triphasic program. The hook uses a wide check-mark opening so athletes can load and pull resistance bands from the floor instead of wrestling them onto a closed hook, and it takes TRX straps just as easily. Built from the same 3x3-inch 11-gauge steel and 8mm mount plates as the racks, with the same 1-inch holes on 2-inch centers, and finished with a 45-degree tube termination that carries the branding at the top. Rated to 300 lb per pair and tested to 1,200 lb — the 4x safety factor ASTM requires of any attachment athletes hang from. Mounts fit over the corner plates of the Power Rack and Double Half Rack.