<P><STRONG>Model Number WES9850P</STRONG></P> <P><STRONG>Fits Models ES718, ES722, ES723, ES724, ES725, ES726, ES727, ES728, ES761, ES805, ES4001, ES4011, ES4012.</STRONG></P> <P>It is recommended that you replace the inner blade at least <STRONG>every two years</STRONG> to maintain your shaver's cutting performance.</P>
