Replaced with each use of your Trophy Skin microdermabrasion device, the Replacement Filters help to provide optimal suction by protecting against clogging and damage of the motor. Simply remove the diamond tip, discard the used filter and replace with a new one before each treatment. Compatible with the UltradermMD, MicrodermMD, RejuvadermMD, and MiniMD devices, the replacements arrive as a pack of 100 high-quality wool filters, allowing you to enjoy a consistent microdermabrasion routine.