2 types of license plate fasteners for this screaming/laughing skull…
1/4×20 stainless steel bolt cast into the back side for those needing a nut and bolt fastener to secure the license plate.
Stainless steel nut is included with each bolt.
#12 stainless steel screw cast into the back side of skull making it solid and sturdy for those license plate installations that use a screw.
The back side is flat on both screw and bolt skulls to aid in secure installation of the license plate to the vehicle.
Same skull is used to make closed mouth (SK009-PB) and no mandible (SK015-PB).