Power-Rise Adjustable Sit-Down Post – Stainless SteelStainless Steel Pedestal, Adjusts From 15″ To 21-1\/2″ Use As Seat Or Leaning Post. 3 Degree Tilt Cast Aluminum Swivel, Rotates 360°. Use With Any Non-Locking Spring-Lock™ 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.