I have loved motors my whole life. Be it a lawn mower, a dirt bike, motorcycle or car I just loved the sound, smell and engineering behind every motor. When I was 10 my dad and I rebuilt the eninge on the Honda XR80 I bought after a summer of mowing lawns. If you ride a bike, work on your car or any other enigne you know the importance of a good spark plug and chances are you admire them as much as me.
Note: the opening for the chain or cord is about 2.2mm wide.