18-inch Arrow length; 263-grain arrow weight; Durable high-quality carbon fiber material; .003 straightness tolerance; 2" Blazer vane with a 3-degree offset; Factory installed illuminated Beacon Nocks; Designed for use in Excalibur's Matrix Series Crossbows; Compatible with CeaseFire Technology crossbows/all models that utilize flat nocks; Excalibur's archery gear is known for its durability, versatility, and changeability; Available in 3/6/9/12 Pack options