Tubular Mount Swivel Jack Bulldog
(Bulldog Part #: HB-158151)
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This item is a Sidewind, Bulldog Tongue Jack with a Gray Painted Finish. It has Rolled Acme Threads of Inner Screw which Allows for Smooth, Powerful Cranking.

  • Bulldog model number SWL 158 DTSF w/P&C


Rating2,000 lbs.
Travel15 inches
Extended (B)29.50 inches
Retracted (A)14.50 inches
Clearance (C)12.20 inches


  • The Swivel Jack comes with a Weld-On Retaining Ring Bracket for up to a 3 inch x 5 inch Tongue, which includes the mounting hardware, plus a Rugged 4" x 7½" Disc Foot.
  • Four locking positions with 9/16" diameter plunger pin.


  • Weld-on mounting bracket
  • Disc foot


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.