7 Inch Diameter. The Quamar (old Fiorenzato MS) brand grinders were very popular in the 1990's, and were re-branded as Wega for a short time before Wega moved to using the Compact grinders. Fiorenzato was absorbed by another Quamar, and dissolved, but came back as three separate companies, C.S. for espresso machines, M.S. for the old models bought up by Quamar and M.C. for their new Fiorenzato branded line.