The Parker Heavy Duty safety razor comes with a twist to open butterfly mechanism for easy blade replacement. Simply, twist the knob on the bottom of the razor to open the butterfly doors and replace the blade. The Parker 99R provides perfect balance and the knurling allows an excellent grip even when the fingers are wet. Moreover, the brass made Parker 99R razor is chrome plated. Chrome has been used in the manufacture of this double edge safety razor not only for its superb corrosive resistance properties, but also for its rich silver mirror finish.