universal arbors mountable on tapered fishing rod blanks as non - degradable self - centering collars to which a reel seat may be mounted . the inventive cylinder - shaped arbor comprises a flexible thermoplastic resin formed as an outer cylinder , closed at one end with an integral end wall or separate disc / washer , which included a cylindrical hole to receive a rod blank . the annulus between the cylinder inner wall and the hole margin includes curved or straight centering fins secured to the cylinder inner wall that are free to flex . flexing of the centering fins permits accommodating a wide range of blank tapers at the proper place of location of a reel seat making the arbor universal and positionally forgiving . once the arbor is located on the blank and oriented properly , the cylinder is filled with a fluid epoxy resin , which when cured permanently secures the arbor to the blank and to the reel seat tube .