Wholesale 18mm ash catchers keep big-joint bongs from turning into swamp glass by trapping ash before it ever touches the main chamber. Each adapter slides smoothly into a standard 18mm joint, adds an extra splash of water filtration, and lets smoke stay crisp without forcing anyone into a lengthy post-session scrub. Thick borosilicate construction handles rapid heat swings like a champ, so customers can torch, clear, and repeat without worrying about hairline cracks or sudden “clink” disasters.

Options span both must-have angles—45° for slanted stems, 90° for upright tubes—plus single-chamber classics, showerhead diffusers, and honeycomb percs for the bubble-fanatics among us. All pieces ship bulk-ready (no fancy boxes, just solid glass), making restocks painless and margins friendly. Load up on these 18mm guardians and give your shoppers the easiest sales pitch ever: cleaner water, smoother pulls, happier lungs.