Using this stove control knob kit is easy. First, turn off the power or gas supply to your stove for safety. Remove the old knobs by gently pulling them straight off the control shafts. Then, choose the appropriate insert from the kit based on the size of your stove's shaft. Insert it into the back of the white knob, making sure the flat side of the D - shaped insert is in the right position for your stove. Finally, push the new knob onto the control shaft. When using the stove, always turn the knobs gently to avoid damage. Keep the knobs clean by wiping them with a soft, damp cloth regularly. If there are any spills, clean them up immediately to prevent staining. Store any extra inserts in a dry place for future use. Remember, if you have any problems, our customer service team is here to help.