The Springfield Marine Plug-In Hi-Lo Pedestal Set is a unique 2-position pedestal system that allows the seat to be used in the full upright position while fishing or down in the lower position while boat is under way. The Springfield Marine Plug-In Hi-Lo 3-Piece Pedestal Set includes the following parts:• Plug-In Hi-Lo swivel seat mount• Plug-In Hi-Lo 9" fixed height post with anodized finish• Plug-In 9" dia. base with satin finishABYC "B" Rated for use under 5 mph. ABYC ""B"" rated for use under 5 mph Plug-In 9"" dia. base with satin finish 9"" fixed height post with anodized finish & swivel seat mount | Springfield Marine 9" Plug-In Hi-Lo 3-Piece Pedestal Set