Cross Bow Nocks- Easton Powerbolt Nocks Flat surface. Replacement crossbow nocks for easton crossbow bolts. Can be installed using hot melt glue or epoxy mixes. Simple to do. Weight 37 Grains. 12 Flat end nocks per package. These flat end nocks are also used for the Beman ICS Thunderbolt Crossbow Bolts. Plastic.