I bought an AGR+UDCT, about 2 months ago, I will say, I won't be buying another, lol.. I love my DCT's and I made a big mistake in spending 17.99 on one, I tried and tried with this, to the point of it making me mad and wanting to chuck it against a brick wall.. I got nothing but leaking, and you want to talk gurgle, I thought, I purchased a 18.00 slurpy, I used the required needle tip bottle, to use in that teeny, tiny screw hole, and that mind you, made me a nerves wreak, worrying if I was going to one time lose that teeny tiny screw, that was needed to keep the hole covered... I gave up, I threw it in my e cig box and that was the end of that.. It's not the one, with the threads on the glass, I only wish, I wanted to find out if I could use it as a regular DCT, with just finding caps for it, I love the pyrex tubes and it came with 2, one large and one small, any suggestions will be welcome.. 