Taper-Lock 9" - Round Surface MountFeatures: 9" Surface Mount Base, 8" Hole Pattern High-Strength Aluminum To Withstand All Conditions Surface Mount Does Not Require A Hole In Deck Use With Any Taper-Lock(TM) Post (sold separately) 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.