The SSG10 is a Replacement Switch Key for Siemens, CES and others. Key will be precut and ready to work in the lock. Pre-cut SSG10 switch key to suit Siemens 22mm and 30mm key switches. Key Code : SSG10 OEM Part Number: 3SY1054, 3SU1950-0FP80-0AA0, 3SU1950-0FN80-0AA0