its a carbourator, so when you release your finger you can finish the hit while the bud is cooling off. not 100% necesary but defanitly recommended
Jimbob1310 Reviewed by Jimbob1310 on . Question about apple pipe... I saw somewhere online that you need to cut out a hole on top leading to the core, put another hole with a hollow tube (like a pen) in it, and then put a third hole to cover with a finger when not inhaling. What does that third hole do? Couldn't there just be 2 holes, the one with smoke going through it and the other with it coming out? Rating: 5