Taper-Lock(TM) Manual Adjust Post - 21" to 31" for 2-3/8"2-Piece Manual Adjustable Set Includes: 2-3/8" Manual Adjustable Post With Posi-Lock System Trac-Lock(TM) Non-Locking Swivel (3100031-1) Use With Any Taper-Lock(TM) 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.