Green/Red Boresighter’s tip adapters for 0.17 to 0.78 Caliber Plastic Adapters universal arbor (2 packs)

【Universal】: These adapters suitable for ark-sight green/ red bore sight kit.
【Specifications】: 12pcs adapters & screw will fit almost all calibers from 0.17-0.78 Cal.( include 20GA 12G)
【Quality】: Plastic material is light weight, strong and sturdy , much stiffer than rubber, will support longer using lifetime
【Use】: Comes with screws, easy to use
Buy it to replace your broken adapters instead of re-purchasing a new boresighter.