Parker CDrossbows Hevi-Hit Inserts are engineered for crossbows shooting over 300 fps. These inserts have a mass weight of 51 grains and feature an 80% more weight forward distribution, while standard insert have very little weight forward distribution.
Specifications and Features:
80% more Weight Forward distribution
Extra long knurled insert for better adhesion to carbon shaft interior wall
Contributes to optimal balance point for 20" shaft
Mass Weight: 51 grains each
Diameter: 24/64" exposed end