Second Generation Posi-Lock Manual Adjust 2-7/8" Pedestal - No SwivelNon-removable pedestal system in 2-7/8 in. offers a heavy-duty base and post for today&';s larger and faster recreational boats. The base is permanent mold AC7A aluminum alloy with an anodized finish for maximum strength and corrosion protection. Then a 2-7/8 in. heavy-duty extruded post is pressed and hydra-formed into the base mechanically forming them together. This proprietary process allows maximum strength for a sturdy pedestal.Features: 2-3/8" inner post with 2-7/8" locking adapter, 9 in. round base Adjusts in 1-inch increments Anodized post and base Use with 2-7/8" Trac-Lock(TM) slide or swivel (sold separately) Adjust from 11-7/8" to 14-3/4" Warranty: 5 years WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.