This cozyna portable coffee grinder is very well made with a well thought out design, Its precise and consistent grind with a ceramic conical burr, rust free, with wide range, one can grind from espresso to French press. No need to unscrew the entire grinder in order to adjust the grind size. Simply turn the knob clockwise or counterclockwise in order to reach perfect size for any coffee drink such as espresso, drip, french press, cold drip, and others. The stainless steel body makes the grinder indestructible and static free.