Your handpieces are expensive and you want to protect them. Buffalo ChuckSaver Dental Lab Burs and ChuckSaver Abbott Robinson ™ Brushes do just that by keeping dust and other contaminants out of the chuck. Also this patented product reduces cross contamination from one case to the other. When handpiece chucks need to be repaired or replaced it can cost hundreds of dollars. These Buffalo products can delay that cost by months or years as they keep over 97% of the generated dust from entering the handpiece. And the good news is Buffalo ChuckSaver Carbide Burs COST NO MORE than Burs without that feature. Buffalo ChuckSaver Abbott Robinson Brushes cost just a little more than the standard Abbott Robinson Brushes.