Product review (5 stars): Work well, but remove the old plastic filter under the spin basket first
Remove the agitator (easy - one bolt - wiggle/lift from bottom). These replace the usually-muck-filled plastic lint filter underneath the spin basket, which has to come out to get rid of the old filter. If you see some nylon ridges right below the holes these items are supposed to press into, then you still have the old filter in there. If no existing filter, press these in with tabs towards the center post; press firmly so that the filter rim sort of dishes in- this causes the small retaining lip to snap into place. Some folks aren't pressing hard enough and the filters fall out later.