Review on BOLANY 9 Speed Cassette Review: The Perfect Fit for Mountain Bikes and Road Bicycles, Ultra-Lightweight Design by John Bennett

ATTENTION! Chinese. The metal used on the suspension extension is very soft and comes off with very little torque. Just hand tighten it and when I started loosening it to adjust the fit it ripped even with a careful hand. I have a lot of experience with mechanics and I didn't use a drill or cheap tools. This metal is just soft. The variant with the inner star could not be weakened either. I also lubricated the screw with non-stick grease 5 minutes before installing it.