AbrasiveSupply.com

The Dynabrade 56027 muffler inserts are a maintenance item. As soon as they turn black from air line contaminants it is time to replace them. Not changing the muffler inserts when they are clogged can slow the tool down and force air line contaminants to build in the motor. Easy to install, simply pop off the muffler cap and switch out inserts. Protect your tool from costly downtime and maintenance. Most Dynabrade orbital sanders require 2 mufflers per tool.