Are you ready for Halloween? Drive around with this guy on your vehicle and never be tailgated again. 

Universal size fits most vehicle rear wipers.  Both the WiperTag arm and window decal are removable. Both are UV protected against fading.  The window decal is also laminated for additional protection.  The arm is double sided (reversible) for left or right side rear wiper.

Approximate measurements:
Arm with Knife 8.5" L x 3" H
Serial Killer Decal 9.5" W x 8.5" H