DO ALL OUTDOORSDo-All Outdoors TC510 Thunder Cap, Orange, 6.9" x 5.75" x 1.9"

Works good, has a good pop, can be used with anything that will puncture the bottle.Needs to be used with soda bottles up to 2 liters because they are stronger for the psi required, water drinking bottle don’t work. Fill the bottle roughly 1/5 ,preference mainly, with flour or corn starch to give a good visual effect. You need a air needle like the ones used to air up basketball/footballs. You just fill the DRY bottle with flour screw lid on and insert needle in lid black tip, hand pump to listed psi and now your ready.

Really enjoying these caps and will purchase others in the future!!!

Freakin awesome fun for the kids and air rifles. They hold air for ever which is cool.””” Update”””...after using these caps I have found that when pressurized to 80 psi, and bursting the bottles, with a pellet gun, shooting just the bottle mid-ship, the caps have a tendency to break, and crack rendering them useless if not dangerous for a second use due to cracking around the top and threads section in, and around the cap itself. Look for white lines!!! One blew up in my hand and left my hand numb and sore for several days. These are not as robust as the Big Blast Caps by Umarex. Take a very close look at the cap before reusing. I will not be buying these twice. My hand is still messed up and that was 5 days ago. If you purchase these be very careful to examine them before second use. IMHO these are a 1 time deal and throw away. That takes away from the value and safety of this particular product. Stick with the WalMart Umarex Big Blast Caps and save your hands and fingers. Plus they are less expensive and built more robust. I don’t feel comfortable with using this brand around my grandkids or even myself. I really hurts. Edgar Snyder .com anyone?

Product worked once (fun for 16 year old). It has a high chance (7 out of 10) that the sealing ring inside cap will get lost after first use. So a little expensive for a one time thing.

These things get LOUD! You have to really pump them up though to the max you can. Shoot it with a BB gun and you are in for BIG FUN! Bought these for my 11 year old and we have had so much fun with them.

Packaging is great. But some of the caps don’t hold the pressure. You can hear the leaking.

Just got these today and they are awesome. Used 1 unit on two 33 oz Trader Joe’s alkaline water and one 50 oz. 90 ish psi. Shot with suppressed CCI 22 long rifle suppressor 45 gr round. Sounded like a sonic boom. Next is adding mashed up sidewalk chalk.

Had a bad time getting some of them to seal while inflating but if they seal and you can get 50+psi they make a pretty good boom.

nice safe ,loud targets, a lot of fun