CHAIN WHEEL

ZP-A75-T3

CRANK 曲柄 A75-170mm

(Alloy Forged 6061-T6)
CHAIN RING 链轮 22T/32T/42T(Steel)
SPIDER 爪 BCD 104/64mm
CHAINLINE 链线 50mm
COMPATIBIL ITY 变速兼容 3*9S/10S
B.B.T 中轴 Chrome molybdenum steel