Quality, condition and value are good. It takes an age to actually set, per se, and lose its stickiness ... at least a week. Application should be done carefully, apply thinly and evenly ... dont rush this. It will allow removal, and give time for work to be readjusted. Beware heavy pieces will slide downward if left on a slope. Allow job to lie flat. Lightweight pieces with large area usually stay put. Work stuck with this adhesive will withstand moderate vibration. Allow 24 hrs to set.