screen for rocket bong

Hi, i just basicly wandering if anyone here has the rocket bong and could tell me how the bowl size compares to a regular bong and what screen size i would need, kinda new to buying a bong used to spliffs. im pretty baked at the moment so sorry if this is little bit hard to understand.

sorry i wasnt to specific about what the actual bong is its jus simply a telescopic bong that folds up and can be put in your pocket or hid easier for e.g. bascicly a fold up travel bong, id post a link but not sure if im alowed or w.e