The Nock On - Carbon Air Stealth Mach 1is made in the USA with a carbon riser that is a longer new-design. The carbon fiber elements are unidirectional which gives you the most efficient bow that is all-carbon. This bow has great accuracy, better stability, and comfort with grip area that has been redesigned and laid back limbs. The Proven Evolve Cam technology is quicker and smoother with precision that is pinpoint. Brace height is 6 1/8" with axle-to-axle length of 32 1/8". The ATA/IBO speed is 340-332 FPS with a let off of 80-90%. Buy at Sawyer's Country Edge.