3 Cutter Sharpener Compatible

Greetings Reviewer, I purchased these Shaver Sharpening Heads by Vollco, to extend the life of my Norelco model HQ9 shaver heads. BE SURE THEY STATE SPECIFICALLY THE CORRECT SHAVER MODEL. I am saving the cost of replacement heads at $20-35 per set, by using sharpener kit that extends the use of the existing heads. First, remove the three metal grills which holds the blades, clean the blades, and replace the grill portion by inserting the three sharpener where the grills were located, that are custom made for the HQ9 model shaver. Place the blades in the indented sharpener wells, place the flexible holder, close and secure the shaver head to the hand part of the shaver. Turn the shaver on for 3-10 seconds which sharpens the used blade for an extended 2-4 months depending on the facial hair thickness and number of hairs on our head. Reverse the process by removing the sharpener wells and place the metal grills in their place and place the sharpened blades back into the grills, secure the flexible holder and secure the head to the handle. You are ready to shave as if the shaver had a new set of blades. At some point the sharpener kit will ware out or the blades will no longer hold a sharp edge to cut our hairs, at which point you may want to buy another kit or set of replacement blades. <><