KingPin Power-Rise Sit-Down Post Threaded Pin – 1-PackFeatures:Adjustable Height To Be Used As A Seat Or Leaning PostRotates 360, Adjusts From 16 To 22-3/8Use With Threaded KingPin Base (sold separately)Rated ABYC Class H-31 B (Fishing Only)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.