Bulldog Trailer Jacks are the unquestionable leader in the trailer industry. Since 1919 Bulldog has been manufacturing the industry’s most trusted products for heavy duty applications. Whether it’s for livestock trailers utility rigs or cargo haulers every rugged and proven Bulldog product is certified ASABE S485 compliant – the ”gold standard” in proven performance for telescopic screw-type jacks. Bulldog Trailer Jacks offer you proven quality performance and versatility. Our wide range of products has you covered whatever your application. For heavy-duty loads where a combination of speedy operation and a variable cranking ratio is needed Bulldog 2-Speed Square Jacks are a good solution. Trailer Tongue Jack Easy Access Grease Fittings Allow For Lubrication Of Internal Jack Gears And Jack Screw/Nut Patented Screw Stop Prevents Screw And/Or Nut Damage When The Jack Is Fully Extended Keeping The Screw In Good Condition For Maximum Screw/Nut Cycle Life Patented Assembly Design Makes The Gears Jack Screw/Nut And Other Internal Components Easily Serviceable. 12.5 Inch Of Screw Travel Drop Leg Features 5 Positions With 13.5 Inch Of Adjustment 10 Inch X 10 Inch Heavy Gauge Steel Foot Plate