Shimano 10T 12T CS-M9100 chainring.

Shimano 10T and 12T Sprockets for CS-M9100
Shimano replacement sprocket for Dura Ace CS-R9100 and CS-9000 12-speed cassettes.

Characteristics:
Teeth: 10 and 12 crowns
Made of steel
Compatible with cassettes: Shimano XTR CS-M9100, Deore XT CS-M8100, SLX CS-M7100, Deore CS-M6100 (12 speed).
Shimano 10T and 12T sprockets for CS-M9100 for Shimano 12-speed cassette, models: XTR, XT, SLX and Deore 12
Shimano replacement sprocket for Dura Ace CS-R9100 and CS-9000 12-speed cassettes.

Product Details
Scope of use: road bike
Group: Dura Ace
Model: CS-R9100 / CS-9000