22" Crossbow Bolts Carbon Arrows 8mm Shaft Half Moon Nocks with Replaceable Screw-in Broadhead for Crossbow Hunting Target Practice Outdoor Gift, 6Pcs Diameter: 8mm. For draw weight 30-60 pounds bows. Matched with replacement screw tips for optimal accuracy and target penetration. Archery hunting arrows with strong, lightweight pure carbon shafts and improved thickness for durability. Colored plastic fleches permanent nickel-plated stainless steel tip perfect for target practice and outdoor shooting. Fixed glue nocks are perfect for your compound & recuve bow. Good performance, low hand shock with good speed.