Product review (3 stars): Wrong adhesive...
An important caution. I'm sure their claims are good if you're attaching directly to stone. However, many stone countertops also have a layer of nylon/polyester reinforcement underneath. This adhesive lasts about 6 weeks attached to that. Look carefully at the underside of your counter first!

Their instructions are good, the concept is good, they installed just fine, but they need to mention that this is for adhering to stone ONLY, and not any other material.