This do it yourself kit is easy to do and loads of fun. Simple to follow instructions allow you to build your own exploading targets that give an earth shattering explosion when hit using a bullet. 2x2 inch square trgets each have an adhesive back which sticks to nearly all surfaces. Great for Bowhunters & Silhouette Shooters. Used by competitive shooters, police & SWAT training teams and everyday plinkers for improved accuracy. Super bright flash and cloud of smoke upon detonation excites shooters and lets you know he target has been hit. Cannot ship to: P. O. Boxes, APO, GU, FPO, IL, HI, AK, PR, MA, MD, Los Angeles or San Fransisco.