When using a Baratza Maestro, Maestro Plus, or Virtuoso to grind for espresso, our innovative, new PortaHolder saves time and makes the job a little easier by easily adapting your existing Baratza coffee grinder. There is no longer a need to stand and hold a portafilter in place throughout the grinding process. Simply insert the PortaHolder in the grounds bin slot, insert your portafilter into the holder, set the grind time, and you are free to walk away. The PortaHolder is easily adjusted to fit any home or commercial portafilter. The PortaHolder also makes clean up quick and easy. Needless to say the Baratza coffee and espresso grinder is not included in the price of the product...however one may be purchased separately!