Punisher skull is made of steel and comes with 1/2 split ring and 5/16" button head bolt and nylock nut 
Skull Measures 3" from the center of the 5/16" mount hole to the center of the ring hole - 3-3/8" H x 2-1/4" W total
This skull is the absolute best and coolest way to mount your Bell to your motorcycle 
skull has a gloss black powder coat that really shines 
Available with Kustom Cycle Parts Bell