If you need to replace the rubber side buttons on your TYT MD-2017 for any reason, this is the replacement part you'll require.
The buttons feature up and down arrows, which can be programmed using the TYT CPS Programming Software for example to go up and down on the channel selection. This rubber replacement part also features the blue function button that can again be programmed in the CPS.
This will also fit the Retevis RT82 Dual Band DMR Radio.