Shimano Dura-Ace 7800 double and FC7803 triple chainrings Features and Information For best shifting performance, A-type rings should be used only with A-type rings, and Btype rings only with B-type rings 2014 aluminum Use with 1/2" x 3/32" chain Item Specifications Color Silver Material 2014 Aluminum | Shimano Dura-Ace Fc-7800 10SP Chainring Silver, 130mm, 53Tooth, A-Type