Carbon Express Predator AIR 4mm Arrows 300 6 pk. 4mm micro-diameter shaft profile;360-degree spine consistency;Straightness:+/-0.025 inch max;Average straightness:+/-0.002 inch;Weight tolerance:+/-2.0 grains;Q2i Fusion Shield-Cut vanes;Includes 4mm aluminum 50-grain outserts;Available in 300, 350, 400table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 1000 Product Group Code: 1000A Product Sub Group 1: 1000A1 Product Sub Group 2: 1000A1B Pack Size: 6 Inactive: No