For maximum strength-to-weight ratio, AFTCO Slip-Over Reel Seats are machined - not stamped or rolled - from the finest marine aluminum. Where the fixed hood is fitted to the barrel, mating surfaces are knurled, then epoxied together for extra strength in an area where ordinary reel seats frequently fail. Finer, rounder threads produce a silky-smooth locking action, and the husky locking rings offer a heavier knurled surface for easier turning. AFTCO Slip-Over Reel Seats are not for use with conventional aluminum butts.