Stop worrying about thieves! Lock up your expensive boat trailer with the bROK Anti-Towing Lock Kit. This easy-to-use ball-locking system fits all popular-sized couplers and ball sockets from 1-7/8" to 2-5/16". Built to last, the bROK Anti-Towing Universal Coupler Lock features weather- and corrosion-resistant chrome plating and powder coating finishes. The adjustable coupler handle lock secures multiple sized handles, and the dual-pin receiver lock provides security from class I to class IV receivers. This anti-theft trailer accessory from bROK includes a universal coupler lock, coupler handle lock, and dual-pin receiver lock. Easy-to-use locking system locks up your boat trailer. Fits all popular-sized couplers. Fits ball sockets from 1-7/8" to 2-5/16". Weather- and corrosion-resistant chrome plating. Powder coating finishes. Kit includes coupler lock, handle lock, and receiver lock