Pre-Cooler SG19

This Glass Bong Pre 'Cooler' from 'Black Leaf' has 2x SG 19 (18,8mm) fittings, to connect your Bong adapter, using either: SG 19 or SG 14 to attach the conical glass bowl, which has a pimple, to prevent rolling, roll-stop. Material: GlassColour: clearPrint: CoolerHeight: 160mmDiameter: 45mmGrind: SG 2×19 (18,8mm)