Unleash your strength with Nike Spotter Arms – your trusty allies for solo lifting. Designed with security in mind, these arms seamlessly attach to Nike Squat Racks and Squat Cages 3x3” uprights. Rubber inserts protect your barbell's knurling, while locking safety pins ensure rock-solid stability. Reach your peak potential independently, courtesy of Nike Spotter Arms. STRONG & DURABLE:Made from solid, heavy-duty steel with a rubber top pad to help protect the barbell's knurling from damage QUICK & EASY TO INSTALL:Simple design makes it easy to adjust height on the rack and install with a heavy-duty steel pin for secure attachment VERSATILE:Compatible with the Nike Squat Stand, Squat Racks, and Squat Cage