Nice Glass™ | 9 inch Double Wheel Perc Dab RigThis Nice Glass 9 inch Double Wheel Perc Dab Rig is a compact but powerful piece built with a double wheel percolator in the lower chamber, promising cooled and filtered smoke for the smoothest and most flavorful dabs. The upper chamber is equipped with a simple horizontal slit drum diffuser, adding an extra layer of filtration. This small dab rig comes complete with a dome and quartz nail, making it ready for immediate use. Nice Glass 9 inch Double