Gold Tip's Black Label Quantum carbon arrow is built for freight train penetrations. The micro-diameter .204 design lessens the sideways drift compared to larger-diameter arrows and concentrates energy for power driving pass through shots. Add the night renegade graphics, and you have a subtle look matched with Gold Tip's legendary performance. The convergence of laser straightness, unmatched toughness, and micro-diameter penetration, the Black Label Quantum has performance that flat out kills. Available in 250, 300, 340 and 400 spines. Specifications: +/- .0025" straightness tolerance. +/- 0.2 grain weight tolerance. Inside Diameter: 0.204" Outside Diameter: 250 (.268"), 300 (.261"), 340 (.257"), 400 (.253") Arrow Weight: 250 (9.3 gpm), 300 (8.3 gpi), 340 (7.7 gpi), 400 (7.7 gpi) Smart Carbon Technology - pure carbon, no fillers. Legendary durability & straightness retention. Gold Tip Black Label arrows are only available from authorized archery pro shops.