Bubble V2 Carb Cap (White Rhino)

The Bubble V2 Carb Cap by White Rhino is a directional airflow cap that sits over your quartz banger and controls how air moves across the dish — giving you better flavour, lower-temp vaporisation, and less wasted concentrate. Small piece of kit, big difference to your dab.

Why a Bubble V2 Carb Cap changes your dab

A carb cap traps heat and restricts airflow over your banger, which means your concentrate vaporises at a lower temperature. Lower temps equal more terpenes, cleaner flavour, and smoother hits — the kind of dab where you actually taste the strain instead of burning through it. The Bubble V2 from White Rhino uses a rounded bubble-shaped tip that spins airflow around the dish, making sure every puddle of oil in the corners gets vaporised instead of left behind.

If you've ever finished a dab and looked down at your banger to see a black ring of leftover concentrate baked onto the quartz — that's what a carb cap fixes. Wasted oil, harsh hits, and a banger that needs a cotton-swab clean after every session. One small cap, three problems gone.

Who the White Rhino Bubble V2 is for

This one's a solid pick if you're running a standard 25mm quartz banger and want a no-nonsense cap that just works. White Rhino has been making smoking accessories for over two decades, and the V2 is their second-generation take on the classic bubble shape — slightly refined airflow, better fit tolerance than the original.

If you're using terp pearls, even better — the bubble shape creates a proper whirlwind inside the banger that spins the pearls and keeps oil circulating across the hot quartz. If you prefer a more targeted airflow, the directional or spinner caps in the White Rhino range are worth a look instead. Different tools for different banger setups.

Specifications

How the bubble shape actually works

The rounded tip of the cap sits inside the banger opening and creates a narrow air channel along the edges. When you inhale, air is forced around the rim of the dish instead of straight down — that circular motion is what pulls concentrate up the walls and back into the hot zone. Flat caps don't do this. Directional caps do it in one direction. Bubble caps do it everywhere at once.

One honest note: glass caps are glass. Drop this on a tile floor and it's done. If you're the kind of dabber who parks gear on the edge of a coffee table, a silicone mat under your rig saves tears. Not a flaw of the V2 specifically — just how borosilicate works.

How to use your carb cap

1. Heat your quartz banger with a torch until it glows, then let it cool for 30-45 seconds (low-temp dabs sit around 260-315°C on the quartz).
2. Drop your dose of concentrate into the banger with a dab tool.
3. Place the Bubble V2 cap over the banger opening — the rounded tip sits just inside the rim.
4. Start your inhale slowly and steadily. The restricted airflow pulls the oil up the walls of the dish.
5. Spin the cap gently by the handle to redirect airflow and clear any pooled concentrate.
6. Leave the cap on for the whole dab — it keeps heat in and finishes the vaporisation.
7. Swab the banger with a cotton bud while it's still warm (not hot). Clean quartz equals clean flavour next round.

Frequently Asked Questions

Last updated: April 2026