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Shelby's OSD HD Galvanized Swivel Jack will withstand the harshest conditions you may face as you trailer any load. The Protective coating on this jack acts is a suit of armor. Like no other finish, the hot dip galvanized coating will protect this jack, both inside and out, form our greatest enemy-rust! For added protection, all fasteners are marine grade stainless steel and the inter screw is a-coated for long life. Shelby's OSD swivel design is patented, and this superior mount received an innovation-of-the-year award in the marine industry. http://www.shelbyindustries.com
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