The TRIMAX SP200 is a 5/8" receiver pin designed to securely fit all Class III, IV and V receiver hitches. Its hardened steel construction is triple chrome plated for durability and features a non-locking design. Commonly used to safely attach receptacles to trailers, 1/2" pins are used with Class II hitches while 5/8" pins are used with Class III, IV and V hitches. TRIMAX is dedicated to engineering high-quality security products and is trusted to provide maximum security across marine, trailer, tow, RV, performance truck, power sports and bicycle applications.