TRI-SPINE COMPOUND DESIGN
The Nano-Pro™ RZ is simply the best compound long distance field target arrow in the world. The Nano-Pro RZ is a parallel shaft that has three different spines, a more flexible center RED ZONE® Technology with stiffer front and back sections. This multi-spine construction manages how an arrow flexes in flight (dynamic spine) delivering pin point accuracy. The Nano-Pro RZ is constructed with incredibly light yet strong 46-ton carbon, unlike aluminum core arrows the Nano-Pro RZ won’t take a set (permanent) bend, consistently holding their initial spine tolerance for several seasons.
 

• Advanced Technology. Extreme Accuracy
• Straightness: +/- 0.0015"
• Weight Tolerance: +/- 1.0 grains
• Spine Selection Tolerance: +/- 0.002"

• Includes Shaft Only No Components

PS:  The point #1 is for the following spines: 350 - 400 - 450. The point #2  is for the following spines: 500 - 550 - 600 - 650