Trimax T33RC The T33RC is a retractable cable 3-digit Resettable combination lock featuring a 3 foot long x 3 mm diameter cable. The T33RC is good for securing bikes, bike carriers, watercraft on the beach, trailers and much, much more. TRIMAX makes the world’s toughest locks. Through value added engineering design, TRIMAX is committed to product innovation that holds up to the highest quality standards. TRIMAX provides maximum security for marine, trailer and tow, RV, performance truck, power sports and bicycle applications. Tested. Tough. TRIMAX.