Designed with a 3” x 3” 11-gauge steel mainframe, the SPR500 provides solid, stable and safe workouts even under the heaviest training conditions. The SPR500 Half Rack features premium J Cup lift-offs, safety spotter arms and an integrated chinning bar for pull-ups, chin-ups and upper body development. The hole spacing for the spotter arms are every 1”, ensuring users will always find the perfect stretch without fear of comprising safety. The rear extension makes the ideal addition to your SPR500 Half Rack, offering plenty of space for storage, without increasing the usage footprint, to keep your home gym organised and tidy after you finish your workout. With four Olympic weight horns included, there is plenty of room to store your weight plates when not in use, with enough space to add more If needed. You can also add one, or more, BSSPRST storage trays for the universal storage of kettlebells, medicine balls, bands and other great accessories.