10-speed Bike Flywheel Big Tooth Cassette 11-40t Climbing for Mountain Black silver

Description

All the cogs are made from high-tensile steel, extremely durable and hard to break. Compatible with standard 10 speed HG hub, not compatible with freewheel system and XD system. Made from stainless steel, it will make most of 10 speed rear derailleurs compatible with 42T cassette, just replace your stock rear derailleur b-screw and adjust rear derailleur again.