Reel seat with machinable core

A reel seat for a fishing rod that can be used on fishing rods having diameters ranging from X up to Y, comprising:

• a frangible outer member having an outer surface adapted to receive the foot of a reel thereon, said frangible outer member having a machinability and a bore extending axially therethrough from one end thereof, the bore of said frangible outer member having a diameter substantially equal to Y;
• and
• an inner member adapted to receive a portion of a rod body, said inner member being disposed within the bore of said frangible outer member and having an inner bore, substantially coaxial with the bore of said frangible outer member, extending from one axial end thereof, the inner bore of said inner member having a diameter substantially equal to X, wherein said inner member has a machinability that is greater than the machinability of said frangible outer member to allow easy diametrical enlargement of the inner bore of said inner member from X up to Y;
• wherein said inner member is exposed outside said frangible outer member only through an open end of the bore of said frangible outer member.