Sea-Dog Sea Dog Stainless Steel Adjustable Antenna Base Deck Mount. Dual swiveling mounts allow this Sea-Dog antenna base to have full adjustability which helps you pick the best location for your boat and your marine device. Dual Swiveling Mounts for Full Adjustability: Dual swiveling mounts allow this antenna base to have full adjustability. For additional durability there is an inner sleeve which prevents it from being damaged by shock or movement. There is also an extra sleeve which feeds the Loran cable through the Stainless Steel Adjustable Antenna Base. This means you're ready for wherever your boat needs antenna support. Specifications for Sea-Dog 329230-1 Sea Dog Stainless Steel Adjustable Antenna Base Deck Mount: Manufacturer: Sea-Dog Color: Stainless Steel Height: 2.88 in Width: 3.625 in Features of Sea-Dog 329230-1 Sea Dog Stainless Steel Adjustable Antenna Base Deck Mount Investment Cast 316 Stainless Steel Dimensions: A: 4-1/2" B: 2-1/2" C: 3-5/8" D: 1-13/16" E: 2-15/16" Dual swiveling mounts for full adjustability Installs with four 1/4 FH fasteners (not included) Package Contents: Sea-Dog 329230-1 Sea Dog Stainless Steel Adjustable Antenna Base Deck Mount Sea-Dog 329230-1: Sea Dog Stainless Steel Adjustable Antenna Base Deck Mount