Power-Rise Adjustable Sit-Down Post - Stainless SteelStainless Steel Pedestal, Adjusts From 13-1/2″ To 20″ 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...