Carlstar Crosstrax 15X6 6X139.7 ET 0mm Aluminum with Black AccentsCarlstar Wheels[CAST ALUMINUM CONSTRUCTION] – One-piece cast aluminum design reduces unsprung weight compared to steel while maintaining trailer-grade durability.[MACHINED FACE WITH BLACK ACCENTS] – Eye-catching finish combines polished surface and black detailing, finished with a protective clear coat for corrosion resistance.[SAE J1204 COMPLIANCE] – Certified to industry-standard specifications for trailer wheel strength and performance.[TORQ-LOCK MOUNTING SYSTEM] – Steel lug inserts ensure secure torque retention and long-term reliability under rigorous towing conditions.[TRAILER-SPEC LOAD CAPACITY] – Built to handle typical trailer loads with strength comparable to premium steel wheels but at a lighter overall package.The Carlstar CrossTrax (branded under Carlisle?s Black Rock Toy Hauler Collection in Canada) is a premium one-piece cast aluminum trailer wheel engineered for recreational and utility trailer use. Its stylish machined face with black accent design delivers both visual appeal and rugged performance. Built to SAE J1204 standards and featuring a Torq-Lock mounting system with steel lug inserts, CrossTrax offers dependable performance and weather-resistant durability, ideal for boat, cargo, RV, and equestrian trailers.