• 4mm micro-diameter carbon core with 7075 alloy metal jacket
• Pre-installed 4mm Microlite™ nocks (6 grains)
• 8/32 4MM aluminum half-out inserts (50 grains) included for optimum FOC for hunting
• Easy target pull
• Straightness ±.001” 
• Weight: 250 spine 12.3 gpi | 300 spine 11.7 gpi | 340 spine 11.0 gpi | 400 spine 9.8 gpi 
• Sold as a dozen pack