Whether pulling a trailer load of 4-wheelers, 4-hoofers, or driving a full-on semi tractor/trailer rig, the Spence Trailer Safety Lock offers peace of mind by deterring theft.  Additionally, the Spence Trailer Safety Lock provides added safety and security for trailers parked on an incline or  needing repair.

Patent #7284641B1

The STSL-1SA is specifically designed to fulfill your request for a Single Adjustment trailer lock. The lock is vertically adjustable and is Safety Yellow powder coated.  Additional colors are available. The STSL-1SA  has only 4 pieces, weighs less than 14 pounds, and has one adjustment on the vertical plane.  The STSL-1SA lock assembly kit includes a user-friendly padlock specifically designed for trailer use.  The STSL-1SA has 8 inches of vertical adjustment and a 10-inch tire contact surface area. The tire contact surface  area will be coated with a non-skid material  to enhance durability and reduce tire slippage. 

Price:  $329.75  MSRP
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The STSL-1DA is designed to fulfill the a manufacturer or end user's need for double adjustments. The lock has 8 inches of vertical adjustment, and each wedge assembly has 3 inches of horizontal adjustment.  The user friendly padlock, and adjusting and attachment hardware are included with each lock assembly.  The lock assembly body is 5051 aluminum and the complete assembly weigh less than 16 pounds. The STSL-1DA gives the end user a variety of adjustment options, has a 10 inch non-skid coated, tire contact surface area, and is powder coated Safety Yellow for high visibility. 

Price:  $449.99  MSRP
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The STSL-2C

The STSL-2C is designed to meet  heavy-duty commercial requirements.  The lock assembly has 7 inches of total vertical adjustment and a 13-inch tire contact area.  Each wedge assembly is 24 inches long, 13.5 inches wide, 4 inches high, and weighs less than 30 pounds.  The STSL-2C also is powder coated Safety Yellow and includes  non-skid coated contact surfaces.  A user-friendly padlock  and attachment hardware are included with each lock assembly.

(Click the graphic at right to view an animated 3D rendering!) 

Price:  $459.50 MSPR
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