I had a zumo 4.2 Roor and recently sold it. The bore on the zumos's is 63mm I believe compared to the regular 55mm bore on the standard roors which was too much for me for everyday use. The dimensions should be on the website for the roor 5.0. I would go with the ice model. Having done a lot of research on Roors If I had to do it over again I would get something with a bistabil joint, in the lil sista style with the green 7.0 label and ice notches. Its the perfect everyday bong, thick as hell, not to harsh. Definately spring for the ice notches, and the DIFFUSER! Makes all the difference in the world. Trust me on this. Order these options and you will absolutely love your roor. I have recently gone 100% Volcano after being quite spectacle about it(I thought no vape could ever compare to a huge rip out of a roor).I WAS SO WRONG! . I ordered it and im never lookin back. Roors are great tho. Peace