American Barbell Rig 20' Stand Alone3x3 11 gauge steel and 3 4" hardware makes this an incredibly solid Rig with modular functionality and a wide variety of customization options. Plastic protection on both sides of the J Hooks helps protect the bar and uprights from scratching and wear. This Rig comes equipped with 12 pull up stations and 4 squat bench stations, adding substantial infrastructure to any weight room or athletic center. Construction: 3x3 11 gauge steel with 3 4" hardware