Staatliches Bauhaus was a German art school which focused on the principle that objects should serve society and have no distinction between form and function. And Handgrey has modeled their Bauhaus collection after those very principals. The MO.25 is the smallest M-series bottle opener made by Handgrey, but its minuscule stature does not sacrifice its functionality in any way. If you need a bottle opener that won't crowd your keychain but is still tough enough to get the job done, this one's for you.