Trojan Coupling Locks have a hardened steel lock and pin. Keys are supplied with each lock. These locks allow the trailer coupling to be locked while either connected or disconnected from the tow vehicle. The lock for the Trojan TC30 & TC40 coupling replaces the lock pin supplied with the coupling, while for Duofit Couplings there is a provision to fit it into the coupling head where it prevents the handle from being lifted.
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