Springfield Marine 3300751-1 9 in. Plug-In Round Aluminum Base for Hi-Lo Post

Springfield Plug-In Round Aluminum Base, 9", for Hi-Lo Post: 9" round base with 8" round hole pattern Satin finish, high-strength aluminum Below the deck mount, requires 3-3/4" hole in deck Use with any 2-3/8" plug-in post (sold separately) 5-year warranty