heres some definitions from urban dictionary(def not a good source but prob the best i can do since the old page on wikipedia was taken down)
http://www.urbandictionary.com/define.php?term=roor
they were started by martin birzle in germany. recently they have been contracted to be made in los angeles at dementia(headshop and glass company). they are made of borosilicate lab grade glass ranging from like 2mm all the way to 9mm(only roor usa makes this 9mm glass)
if you want more info google, or check www.roor.de
www.everyonedoesit.com
www.tokecity.com
or better yet check the roor store in person in amsterdam. on st.nichelestraat(sp?) right by the dna genetics shop
other good brands include toro(usa)
ph(x)(canada i think)
lux(if your in europe you can get one at the dna shop, otherwise usa only)
bluedot
ehle
cheers for the info!
