Do-All Thunder Cap Super Sonic Target Valves take shooting bottles to the next level! Simply screw the Thunder Cap on any standard soda bottle, pump to the appropriate PSI and start shooting. Increase the report by filling the bottle with corn starch or flour. Add some colored chalk for the ultimate visual verification.
- Easy to use
- Rated for pellets, arrows, rim fire, center fire
- Gives off a report of up to 150 db