Make: Truvativ SRAM
Model:  SRAM/Truvativ X0 X9 11.6215.188.240
Material: Aluminum
Speeds: 10speed Double MTB
Teeth: 42T
BCD: 120
Color: Black

Please feel free to ask any question you may have before purchase, I'm glad to answer!
I can take extra pictures or measurements if you want more details.

Thanks for looking!