Thank you for viewing. This is a set of 3 replacement brushes specifically for the Smart Sonic+UV. They are new and unused, but the package has been opened. I opened the package intending to replace the brush, but the main unit broke, so I haven't used them. Please refrain from purchasing if you are concerned about the opened packaging. - Model Name: Smart Sonic+UV - Quantity: 3 brushes - Material: ABS resin - Compatibility: RST-2016UV only - Features: Replacement brush set