Originally Posted by Ironfish653

Are you sure you know what you're asking for? Tubulars, also known as "Sew-Ups" consist of a lightweight casing that has literally been stitched closed around an equally lightweight inner tube, forming a single piece, that is then glued onto a specially -profiled rim.
Tubular tires are really only found in the realm of high-end road racing and cyclocross bikes, and predominantly the 700c size.
There was a 650c (571 ERTO?) in the 1990-y2k era that saw use on low-pro time-trial bikes, but is an obsolete size today. These tires were often given the 26" designation, because tire manufacturer Continental is German, and under the traditional German naming scheme, 650c are called 26"