Stock for Dura-Ace 7800/7803 double and triple cranksets. Nickel plated duraluminum: 10-speed SIS compatible. For best shifting performance, match A-type, B-type, or E-type chainrings.
Features:
Rings are designed to be used only as a set42/54, 42/55, or 44/56. 45t ring is an optionto be used with the 56t ring.