Product details:

Direct Mount 3 bolt chairings compatible with SRAM cranksets with a removable Spider. Narrow Wide tooth profiling ensures ultimate chain retention. 7075-T6 aluminum, aerospace grade strength. Stiff 4mm plate thickness to transfer loads without flexing.Material: CNC aluminium.
Narrow Wide system (one on two widest), allowing you to roll in a single deck without derailing, without chain guide.
For use in DH, FR, Enduro and XC.
Compatible with 9 V 10 V 11 V mono plate mount.