preemo - 19 inch Double Disc Perc BongThe 19 inch Preemo Double Disc Perc Bong is a beast crafted from crystal clear borosilicate glass with dome over double disc percolators for the best filtration! The double disc percolators work together to break down your smoke into fine little bubbles for maximum filtration to deliver ultra smooth, cooler hits. This unique setup ensures that each inhale is less harsh on the lungs, making your hits more enjoyable. And with ice notches ready for some