KingPin 4″ x 8″ – Stainless Steel – Rectangular BaseFeatures:4 x 8 Stainless Steel Base With Nylon Bushing And Satin Finish3 Cup DepthBelow The Deck Mount Requires A 2-1/2 Hole In DeckUse With Standard KingPin Posts (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.