Product review (1 stars): Product increases installation time
Use the kit that comes with the Waste King disposal , not this "time saving" adaptor kit.  The product description should have noted that, "This adaptor will put your new disposal's discharge line lower than that of the existing disposal; which may require additional plumbing work than what would be needed if you chose to use the standard kit that comes with your new Waste King disposal."  The product does allow you to use you old Insinkerator sink mount instead of the new sink adaptor kit that already comes with your new Waste King. However, the kit sets the Waste King discharge line lower than where it was in your old disposal. This change in elevation requires additional plumbing work that isn't needed if you would just use the kit that comes with the Waste King disposal. I installed this adaptor and then had to remove it because I didn't want to mess with running to the store to get extra parts to adjust the plumbing. I ended up using the kit that came with the Waste King. The kit that comes with the Waste King disposal is very easy to install and you can see the Waste King logo on it in the bottom of your sink. Why would you want to spend the money for a Waste King and keep the original Insinkerator logo that will remain in your sink if you use this adaptor? That's like buying fine wine and pouring it in the bottle of an old bottle of a $5 wine and serving it to your guests.  I am thankful for Amazon's no-hassle return policy.