MACHINED FROM 6061 T6 ALUMINUM. HARD ANODIZED FINISH. DESIGNED TO FIT THE POPULAR ALPS CENTRA-LOCK(CAH) REEL SEAT DESIGN ON THE THREADED END.  ADDS BEAUTY AND COLOR TO ANY CUSTOM ROD. FITS SIZE 18, 20, 22, 23 AND 24 ALUMINUM SEATS. BLACK OR SILVER

18-- .680ID/ .983OD
20-- .750ID/ 1.062OD
22-- .810ID/ 1.118OD
23-- .898ID/ 1.193OD
24-- .960ID/ 1.292OD