This is my bong:
This is the HMK Ti pad I use with a 18mm-14mm reducer. The HMK is a 14mm male end and the bong is a female 18mm joint.
http://aqualabtechnologies.com/catalogsearch/result/?q=hmk
Aqua Lab Technology is a great company from SoCal that gets your ish to you fast as hell and not broken! Great gear they carry too. The specialize in Bubble extraction, and do not carry oil extraction products. (Refer to the link I posted previously for those)
As far as coughing goes, if you take a small dab you will get exceptional flavor and a very smooth hit; though potent. Don't underestimate this stuff! It's the strongest method I have found to smoke Cannabis too! Instant uppercut style! If you take too big of a dab, which won't even register on a scale lol, you'll be hacking, but you will also be SUPER HIGH! Take it easy with dabs too, because they will destroy your tolerance fast! Next thing you know you are smoking nothing but errl! Not a bad thing really. Start small and see what's up that's all.
Cheers,
Crom
PS
Aqua Labs is a sponsor here on the Farm!