3.5″ VAC STACK CACTUS CARB CAP

The 3.5-inch Vac Stack Cactus Carb Cap is a decorative glass carb cap shaped like a desert cactus, built for dabbers who want their rig setup to have some personality. The vacuum stack design creates directional airflow to move concentrates around your banger, while the cactus shape gives you a comfortable grip and a conversation piece that stands out on any dab station.

Why this cap works

• Better vaporization coverage — the vac stack airflow pushes your concentrates around the banger instead of letting them pool in one spot
• Easy grip that doesn't slip — the cactus shape gives your fingers something to hold onto, even when things get a little oily
• Solid glass construction — built thick enough to handle daily use without feeling like it'll break if you set it down too hard
• Multiple color options — available in various colorways so you can match your rig or just grab whatever catches your eye
• Compact enough to store easily — at 3.5 inches, it fits in most dab kit cases or sits nicely next to your rig

Best for

This carb cap fits dabbers who run flat-top bangers and want something more interesting than a generic bubble cap. If you're the type who coordinates your glass or just likes pieces with character, the cactus design delivers without sacrificing function. Works well for low-temp dab enthusiasts who need that airflow control to get every last bit of concentrate vaporized.

How it works

Drop your concentrate into a heated quartz banger, then place this carb cap on top to seal the chamber. The vacuum stack design restricts airflow in a way that creates directional movement inside the banger — basically pushing your oil around so it hits the hot walls instead of sitting in one spot and burning unevenly.

The cactus shape isn't just decorative. Those raised sections give you natural grip points, which matters when you're handling glass that's been sitting near a hot banger. Twist the cap slightly while drawing to change the airflow direction and chase your concentrate around the banger floor. This is how you get full vaporization on low-temp dabs without leaving behind a puddle of wasted material.

When you're done, set it on a silicone dab mat to keep residue off your table. Glass carb caps like this one collect some buildup over time, but they clean up easily with isopropyl alcohol.

Specifications

Compatibility notes

Designed to work with flat-top quartz bangers. The base diameter should cover most standard banger openings, but it's not a universal fit for every nail style out there. If you're running a terp slurper, spinner banger, or something with an unusual top shape, double-check your measurements. For standard flat-tops in the 25mm-30mm range, you should be good.

Keeping it clean

Let it cool completely, then wipe off any residue with a dry cloth. For deeper cleans, soak in isopropyl alcohol for 15-30 minutes, rinse with warm water, and let it dry before your next session.

Frequently asked questions

What size banger does this fit?

The vac stack design works with most standard flat-top bangers. It's not sized for tiny 20mm bangers or oversized 35mm+ nails, but the typical 25mm-30mm flat-tops you see on most dab rigs should work fine.

Does it actually make a difference compared to a regular cap?

Yes. The directional airflow from the vac stack design moves your concentrate around the banger instead of letting it puddle. You'll notice better vaporization on low-temp dabs especially — less wasted material left behind.

Is glass better than silicone for carb caps?

Glass gives you better heat resistance and doesn't absorb flavors over time like silicone can. The tradeoff is durability — drop a glass cap on tile and it's done. If you're careful with your gear, glass is the move for flavor chasers.

Can I pick my color?

Multiple colorways are available. Contact us about current stock if you have a specific color preference — availability varies.

Will this work with a terp slurper or spinner banger?

Probably not the best fit. Terp slurpers need specific cap styles to function properly, and spinner bangers work best with marble or pill-style caps. This vac stack design is optimized for standard flat-top bangers.

How do I store it when not using it?

Set it on a dab tool holder or silicone mat between uses. The cactus shape actually helps here — it stands upright pretty well on its own, so you don't need to lay it down and risk rolling.

Does the cactus design affect function or is it just looks?

Mostly looks, but the shape does give you better grip than a smooth bubble cap. The function comes from the vac stack airflow design inside, not the external cactus shape. You're getting both style and performance, just from different parts of the design.