Using this stove control knob kit is easy. First, remove the old knobs from your stove. Then, choose the appropriate inserts from the kit that fit your stove's shaft size. Make sure to align the flat side of the D - shaped insert according to your preference. Insert the selected insert into the new white knob and then attach the knob to the stove's control shaft. If you want, you can use the included decals to mark the temperature or number on the knobs. When it comes to maintenance, keep the knobs clean by wiping them with a soft, damp cloth. Avoid using abrasive cleaners as they may damage the knobs or the decals. Also, be gentle when turning the knobs to prevent any breakage. Store any extra inserts in a dry place for future use.