Refurbished grinders are preowned grinders that have been fixed, cleaned, and updated to the newest parts, but might have minor blemishes and scratches from previous use.
The refurbished grinders come with a 1 year warranty. The supply of refurbished grinders is limited.
I wasn't sure how this would perform, but after trying a few different grind settings I am now getting some delicious espresso using this grinder. I recommend it highly!