The HOC-LOC™ Truck, Trailer and Chassis Brake Lock, along with our Interior Trailer Door Lock, and Container Door Lock, provide the best cargo security system on the market today. The HOC-LOC Truck or Trailer Security Products can be installed independently, or in combination with other products and components. - With HOC-LOC protecting your fleet, rest assured your trailers will remain where you left them! - HOC-LOC engages automatically every time the parking brake is set. - Now you can have security with or without a tractor attached to the trailer and, as you know, unattached means uninsured. - Can be linked to satellite tracking systems for remote configuration and operation. - Hazardous materials security for items such as fuels, chemicals, and pharmaceuticals. - Qualifies for many insurance company discounts. The HOC-LOC Carries a 1 Year Warranty DOT Approved, Financing/Leasing Available J.P.Holt Corporation Fresno, California Email: information@hoc-loc.com Tel.:(559) 498-0783 FAX:(559)272-2174 Home | Trailer Systems | Truck Systems | Trailer Door Lock | Chassis System | Container System | Equipment Systems About Us | Benefits | News | Links | Contact Us PATENT PENDING It is the policy of the J.P. Holt Corporation to vigorously defend its intellectual property rights