System 3 Off-Road SB-3 single beadlock matte black wheels are engineered for aggressive riding and punishing terrain. They feature classic Baja styling and rugged modern construction. With a functional 10mm billet beadlock ring, 5/16 in. Grade 8 bolts, and a 1,500 lb. load rating, the SB-3 is the strongest cast aluminum UTV wheel on the market. The wheel's stainless steel lug inserts are an industry first for a UTV wheel; these inserts ensure a tight fit that won't go oval-shaped with use. A bolt-in center cap is included, along with a lifetime structural warranty.