Aluminum inserts are lighter than brass inserts. This lets you shoot faster and shoot better. If you use an aluminum insert with lighter head, you can also gain a flatter trajectory. Carbon Express® Crossbolt Inserts feature an aircraft aluminum construction for extra strength. They are designed to fit all Carbon Express® Carbon Crossbolts.

Features:

• Lightweight Aluminum construction makes for a lighter weight insert, which delivers more speed and a faster shot. 
• Extra Strength Aircraft aluminum construction adds toughness and durability.

 Specifications:

• 12-pack
• 25 grains