Filters are good, very good. Better media than originals and I think they will last a long time. Fit is the problem. Each filter has a 3/4" internal stem extension which prevents the filter from sealing against the base of the motor housing. If you cut it they will work perfectly. It is recommended to use a dremel with a cutting wheel. The bottom of the filter is located inside to prevent shavings from sticking to the filter media when you cut off the extension.They will fit without this modification but the lock nut only screws on halfway up its threads and I'm not sure about the gasket.in the base.