春色视频狠狠干青青草|成人免费视频有码|性爱小视频亚洲中文字幕|吊嘿嘿水无码专区

蘭溪市馳航機械股份有限公司主要生產鋁合金鍛件,擁有多年的鋁合金制品鍛造加工經驗。

R31B-XD2

CRANK MATERIAL:FORGED ALLOY-6061-T6

CRANK LENGTH:170MM

CHAINRING:52/42/30T

OUTER CHAINRING:CNC ALLOY "HBK"ANODIZED

CENTRE CHAINRING:CNC ALLOY“HBK”ANIDIZED

INNER CHAINRING:CNC ALLOY“HBK”ANIDIZED

COMPATIBILITY:9S

PCD:110/74MM

CHAINLINE:45MM

B.B.Axie:110MM(21-68-21R)

CRANK MATERIAL:FORGED ALLOY-6061-T6

CRANK LENGTH:170MM

CHAINRING:52/42/30T

OUTER CHAINRING:CNC ALLOY "HBK"ANODIZED

CENTRE CHAINRING:CNC ALLOY“HBK”ANIDIZED

INNER CHAINRING:CNC ALLOY“HBK”ANIDIZED

COMPATIBILITY:9S

PCD:110/74MM

CHAINLINE:45MM

B.B.Axie:110MM(21-68-21R)