Used this kit a couple times now to sharpen my reel mower blades. Works great, clear instructions.
There is a ton of compound with this. After sharpening my blade a handful of times, it looks like I barely used anything out of the tub. I suspect you only need one tub of compound for a lifetime.
A huge improvement and highly recommended. If you are having trouble with your reel mower, make sure you adjusted the blades properly and that they are sharp. After sharpening the blades I could practically jog and cut my grass with little to no issue.