I bought this cassette to replace an aging Shimano that came with my bike, also 7 gear. What I like about this version is the lower steps between gears. I had my regular mechanic install it on a new wheel. Very smooth, quiet and shifts seamlessly.
I was looking for a replacement sprocket to fit a older bike. Sometimes it's hard to know if something will fit or not, it was a direct fit. The gearing was slightly different but performs great.