Preemo - 18 inch U-Shape Percolator BongThe Preemo 18 inch U Shape Percolator Bong looks awesome and is packed with features that will make every hit smoother and more enjoyable! Crafted from thick 7mm borosilicate glass, this beaker perc bong is built to withstand the test of time. The U shaped percolator and open ended down stem give you optimal smoke diffusion so you can get silky smooth hits every time. The unique percolator system cools the smoke as it travels through the tube, passing