Bong plugs are designed primarily to make bong cleaning easier. Soft silicone and rubber plugs perfectly fit the relevant 14.5 mm or 18.8 mm bong joint size securely closing the hole. This allows you to conveniently shake the cleaning liquid inside the bong with no splashes. The second type of bong plugs closes the kick-hole. In addition to cleaning solution, such plugs close the kick-hole instead of you, creating better air draft when smoking. So bong plug is another nice little thing that makes life easier which you can find among bong accessories on Headshop.ge!