Are you wondering how to replace the cheap standard blades in the SHAVENT?It's very easy to change the blades: take out the old blades, put the spacers aside, have new blades at hand and off you go: first blade, spacers, second blade, spacers, third blade, put on the head and knurled nut tighten gently. COMPLETE!So that you can follow it closely, we have prepared a video with instructions for you: SHAVENT blade change: Changing blades is easy