Using the stove control knob kit is easy. First, remove the old knobs from your stove or cooktop. Then, choose the appropriate insert from the kit based on the size of your burner or simmerstat shaft. Fit the insert into the new black knob, making sure the flat side of the D - shaped insert is in the right position. Attach the knob to the shaft. If you want, you can use the decals to mark numbers or temperatures. When using the knobs, turn them gently to adjust the heat. For maintenance, clean the knobs regularly with a soft, damp cloth. Avoid using abrasive cleaners as they may damage the knobs or the decals. Store any extra inserts in a dry place. If you have any issues or need further help, feel free to contact us.