Bulldog Square Tube Gooseneck Coupler Bulldog
(Bulldog Part #: 28960)
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Delivered by 04/01/19 if ordered by 2:30pm CT today

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You won't find a coupler that's faster or easier to use than the Bulldog Square Tube Gooseneck Coupler. Its user-friendly design makes hookup and release swift and secure. Coupler includes 4-1/2 inch square outer tube, 4 inch square inner tube with cast locking plates, 3/4 inch load bearing pin and single set screw.


    Ball Size2 5/16 inch
    Rating25,000 lbs
    Installation InstructionsCLICK HERE


    • Easy-grip handle is accessible from any position
    • Self-centering locking plate lets you miss the ball my more than an inch
    • Tight ball fit reduces jarring when changing speeds or on rough roads
    • 32 to 40 inch vertical adjustment
    • Set screw and 3/4 inch load bearing pin - Pinch bolt design
    • Includes 4-1/2" outer, 4" inner tubes - unpainted
    Installation Instructions CLICK HERE


    1919 - In a small third floor room over his car dealership in Wausau, Wisconsin, Thomas J. Jacob begins making high-quality precision tools of his own design. His venture becomes known as the Hammer Blow Tool Company. The death of a favorite hunting dog due to an accident involving a poorly-designed trailer hitch leads Jacob to develop the first drop-forged ball-and-socket trailer hitch, which he names the "Never Lets Go" Bull Dog. More inventions follow, positioning Hammer Blow at the forefront of the trailer industry at its infancy.

    1930's - Demonstration models of camper trailers built by Jacob at the Chicago World's Fair set off a period of rapid growth in the industry.

    1940's - Jacob dies in 1945. His wife, Lula, takes over Hammer Blow and guides it with great success for more than 20 years.

    1960's - In 1967, Lula Jacob sells Hammer Blow to Neway Equipment Company of Muskegon, Michigan, which later sells to Lear Siegler, Inc.

    1970's - In 1977, private investors led by Thomas J. Reinhart purchase and rename The HammerBlow Corporation. Expansion of the mechanical jack line and related products continues for more than a decade.

    The above information has been provided by the Manufacturer, and we cannot guarantee the accuracy thereof or endorse the opinions expressed.