A little pricey but has been the ideal product for my uses. I do repairs and add baffles to woodwind mouthpieces and have found this to be just the right material. I have also repaired a chip on the red cover of a Swiss Army knife and it blended right in with the plastic (different color) and is still holding more than 5 years later. It is easy to sand it down and polish it once dry so that it blends in with the item it has been applied to.
It did not hold when I tried to repair a tiny chip on a wood clarinet but I think it would be on a plastic repair.
I recommend getting the dispensing gun available for it. When the the two parts are mixed 50-50 accurately the curing time is much quicker. Before getting the gun I went through a whole tube and got very variable hardening times, even up to 3 days.