Springfield KingPin Power-Rise Sit-Down Post Threaded Pin - 1-Pack [1632012-A]KingPin Power Rise Sit Down Post Threaded Pin 1 Pack Features: Adjustable Height To Be Used As A Seat Or Leaning Post Rotates 360, Adjusts From 16 To 22 3 8 Use 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.