Trimax T645S The T665S is a hardened metal rotor / disc lock with a 5.5 mm pin (short throat) in yellow and includes a carry pouch and disc lock reminder cable. The reminder cable ensures you do not try to drive off with the lock still in place. Rotor / disc lock provides an additional layer of protection for your motorcycle. 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..