Easton Genesis Aluminum Arrows - 36 Pack - The only arrow approved by NASP Tournament Competition. Accurate, durable and economical. 7075 aerospace alloy Hard-anodized Straightness: ± .005in Weight tolerance: ± 2.5% Strength (psi): 90,000 UNI bushing, nock, and point —installed The ONLY arrow approved for all NASP tournaments and events MADE IN USA