This abrasive grinder has many unique features for working on harmonica reeds:

• grinding tools highly resistant to wear
• extremely light and ergonomic design
• adjustable rotation speed which avoids expensive accidents
• also inner reeds can be worked on without dismantling the reedplate (makes it much easier, especially for Chromatic players)
• can be driven with any USB wall-plug or with the USB connection of a computer - USB type A cable (ca. 100cm / 30 in) provided in the package