Shimano A070

Shimano tourney a070- road crankset 2x8/7-speed. The shimano tourney a070 crankset is compatible with 2x7 and 2x8 drivetrains and provides compact 50-34t gearing. It uses a square taper bottom bracket interface.Specifications:- Rear speeds: 8/7- Compatible chain: HG 8/7/6-speed- Chain line (mm): 43.5- P.C.D. left / right (mm): Riveted- O.L.D. Thru (mm): 142- O.L.D. QR/Nut (mm): 135- P.C.D. (mm): Riveted - Spider/gear arms: 5- Chainring combination: 50-34T- Q-factor (mm): 169- Crank arm length (mm) 165: Yes- Crank arm length (mm) 170: Yes- Optional chain guard With bash guard: Yes- Optional chain guard With chain guard: Yes- Optional chain guard Without chain/bash guard: Yes- Compatible bottom bracket type Square: Yes- Recommended bottom bracket Threaded (normal): BB-UN300 - Axle length of BB-UN/ES (mm) Threaded (normal): MM110- Threaded bottom bracket shell width (mm) 68: Yes- Threaded bottom bracket shell width (mm) 70: Yes