Packs a SERIOUS punch!
Love the idea and the look of this attachment. It definitely does work exactly as expected - be ready to cough like you've never coughed before - though I'm not a huge fan of the nail that comes with it. Easily rectified though as this takes 14mm female nails. Also, you should *definitely* use this with a carb cap. Overall, this thing is freakin' awesome and the price was just right.
Works like a dream
Gravity dabs are amazing, just lift slowly before applying your goods to the nail so you don't lose any vapor (I learned that the hard way) 10/10 would buy again