The ferrule is made of 416 stainless steel while the blades are constructed of high-end cutlery grade 420 stainless steel. Why two different materials? First, there is an edge effect strength dynamic that is found where the two separate materials intersect. Second, materials with different hardness values and strength ratings best serve the different functions of the ferrule and blades. For instance, blades are typically made of harder steel, which lends itself to better sharpness and ferrules are generally constructed of a somewhat softer material that provides sufficient strength while also demonstrating flexibility to avoid critical failure upon severe impact. NAP's proprietary Diamize sharpening process involves grinding in such a way that prevents the edge from getting hot. This stops the loss of hardness, which in turn causes the edge to hold longer.

Three Diamize processes create three distinct edge types, double bevel, single hollow bevel and single flat bevel. The HellRazor features the sharper single flat bevel edge on its .04-inch thick blades. Available in 100- and 125-grain weights the re-sharpenable HellRazor sports a 11/8-inch cutting diameter.

QuikSpin ST Vanes
In 2003, after years of development, NAP introduced an innovative vane named the QuikSpin. NAP's patented "Kicker", a raised tab on one side of the trailing edge and patented Micro- Grooves on the opposite side of the vane work together to produce increased rotation speed. In the same manner that a football is stabilized by a tight spiral pass an arrow is also stabilized by rotating--the faster the better. In true NAP fashion the voice of the customer was once again heeded and the design team launched a high-dollar development campaign to improve the durability and performance of the QuikSpin. Enter the 2007 QuikSpin ST (Super Tough) high-performance, long lasting vane. The new proprietary vane material is a custom compounded copolymer alloy, which is lighter, stronger and quieter than the original. The new material exhibits greatly increased elastic "memory". QuikSpin ST vanes will be available in two-inch, 3.125-inch and a new lower profile four-inch model.

To learn more about NAP's innovative archery accessories contact: New Archery Products, Dept. PB, 7500 Industrial Dr. Forest Park, Illinois 60130; (800) 323-1279; www.newarcher.com.