The Little Sister 7mm with Green Logo by Roor has an enlarged beaker base to allow for more coolant, thus giving you a smoother cooler smoking experience. Some Roor purists love the aesthetic tubes however Martin Birzle also found that some customers preferred a beaker base and the Little Sista was born. This pipe is the smaller model to the other beaker based roor bong the "Dealers Cup".
The roor bongs premium range comes in the following thicknesses 3.2mm, 5mm, 7mm and a one off 4.2mm. Each glass pipe in the premium range reflect the passion the artists at roor have for manufacturing only the finest glass smoking pipes money can buy. Their expense is reassurance to you, the user, that what you are buying is a hand made product of the highest calibre, lovingly made to ensure that each piece is the perfect smoking implement.
Roor Bongs creator and owner Martin Birzle personally oversees his artists at the studio in Frankenthal ensuring that each piece is lovingly made, and then signed by the artist involved. You can tell the different thicknesses by their standard colours, red is 3.2mm, white or black is 5mm, green is 7mm and yellow is a fairmaster bong which is 5mm.
 
3 part water pipe
ground joint: 14.5mm/18.8mm
height: 35cm
glass thickness: 7mm