We started with our proven round and oval orange ring sight system and perfected it one step further. The result is a front and rear sight system that is one of the most innovative wing shooting sights of the decade! The Drop Box will enhance the shooting ability of cross eye dominant shooters by allowing the shooter to keep both eyes WIDE OPEN. This new evolution of wing shooting sights will aid the novice or veteran shooter to correct this problem with Dead Ringer's ground breaking rectangular shaped orange box design. Over 80% of hunters have cross eye Domination. Allows the hunter to keep both eyes wide open while acquiring the most difficult aerial targets in conjunction with the help of the 6 compass or guide points. Simply start from the receiver and move the rear aperture toward the front sight until you can acquire the target with both eyes open. Plastic front and rear sight bases are not acceptable in any of Dead Ringer's products. Aircraft grade 6061 T-6 aluminum with hardened steel screws in conjunction with threaded steel plates that securely attach the front and rear sight to the vented rib. Dead Ringers Light Pipes are made of durable Optical Lexan (the same material used in making bullet-proof glass) with our own special formulation of fluorescent dyes that make Light pipes 10X stronger than fragile fiber optic sights. Our Patent Pending twist lock key way prevents the light pipe from falling out of the front sight and securely locks it in. Dead Ringer also offers spare light pipes in various colors on all of our models. 100% customer satisfaction and a lifetime limited warranty.