The Burnett Power-Tip is our toughest insert on hard calculus. Its mass is greater along the working portion of the tip, so it has more momentum when it hits the calculus and transfers about 70% more energy. Nothing works better than the Burnett when you are tackling flinty root calculus, interproximal accretions or amalgam overhangs! The Burnett’s long, slim tip allows it to reach deep pockets. It’s also longer than a traditional slim insert and has a broader stroke. Finally, this little toughie is also more robust than a slim insert. If you need to, you can crank your scaler’s power to maximum with no problem. Power: Any.