Spring-Lock 9″ Round Base SatinFeatures:8 hole pattern, high-strength aluminumBelow the deck mount (requires a 4 hole in the deck)Use with any Spring-Lock or Clip-Lock post (sold separately)Warranty: 5 YearsWARNING: 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.