Bottle Screw: 2 Liter Bottle Holder (c) 2013 Laird Popkin, based on http://www.threadspecs.com/assets/Threadspecs/ISBT-PCO-1881-Finish-3784253-18.pdf. Credit to eagleapex for creating and then deleting http://www.thingiverse.com/thing:10489 This is a hand washing station to for small villages without access to running water in order to improve personal hygiene to help prevent the spread of sicknesses.