Featuring the durability you demand at a value every boater will appreciate, the Bass Pro Shops Outdoor World Marine 2-3/8 Deck Mounting Base sets the standard for approachable quality. This surface-mount pedestal-seat base features an ultra-tough, corrosion-resistant build, 9 aluminum base, and compatibility with 2-3/8 keyed pedestals (not included). Installs easily to get you on the water faster. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Hardware.