4EVERHOPE50MM Lawn Mower Blade Sharpener for Power Hand Drill Grinding Drill Sharpener, Rotary Mower & Tool Sharpener (4pcs)

A pack of 4 for £8.99 isn't exactly expensive but, as other reviewers have noted, the stone isn't particularly long-lasting and the spindle screws come loose very quickly......however with a small amount of suitable glue around the threads before use and if used as a finishing sharpener these are quite useful as the blade need not be removed. This with reference to ride-on mower blades which are fairly substantial - on smaller, thinner blades then probably no need to pre-grind before using these.

It's a good idea but it is so poorly made that it has no chance to work as they planned unless only some are buggy. One delivered already lose, another broke after a minute. They crewed it using tiny screw instead of poxy.

good idea but they dont last long better to use a grinder and finish off using these

Does the job, but if your blades have heavy pitting from stone damage the plastic disc does take damage, I think next time I will pay extra and get one with a metal disc.

Whilst it does its job, it is a very tight fit on my rotary cutters blade and therefore takes a while to do its business.

They do the job but the screws come loose very easily and constantly need tightening!

Hi it is easy to use with drill does great job

Not much good for ride on blade sharpening