Product review (4 stars): Just what I needed, but had to cut open the drain holes.
Easy to install with another set of hands to help. As you tuck it in to the groove it falls back out as you keep going around, without someone else to hold it in place. That's not a design flaw, it just is what it is. Also I ran it after installing it. When it was done I found that the seal was full of water and not drawing back into the tub. I found like others are saying here, that the drain holes were sealed. I used an exacto knife and carefully cut open the drain holes and now it drains properly. And most importantly no more leaks!