AZ1-AS210 Bicycle chainwheel and crankset

Crank length: 165MM,170MM
Crank material :AL-6061-T6
Crank finish : silver anodized
Chainline: 43MM
BCD:    144MM
Chainring: 48T,49T,50T
Chainring  material: AL-6061-T6
                                         AL-7075-T6
Chainring finish:  black anodized