The X-3 Series Spotter Arms are designed specifically for the X-3 Series Power Racks to provide extra security when lifting weights alone. Constructed from heavy-duty 11-gauge steel, these Spotter Arms will hold a weight capacity of up to 1,500 LB. Featuring fully lined UHMW plastic liners and a durable powder-coated finish to protect your safety catches and barbell from damage. Additionally, the arms are easy to adjust up and down your X-3 Series rack with quick pin adaptors. These durable Spotter Arms are an absolute must-have for anyone who prefers to do hard training alone.