Everything You Need to Know About Glass Carb Caps

A glass carb cap is a small but essential accessory for any dab rig. Placed over your quartz banger after loading a concentrate, it restricts airflow and creates a low‑pressure environment inside the nail. This allows you to vaporize your dab at a lower temperature – preserving flavor, reducing waste, and making every hit smoother. For smoke shops, carb caps are high‑turnover accessories that customers frequently lose or upgrade, making them a staple for repeat sales.

At CloverGlass, we manufacture and wholesale glass carb caps in all popular styles: bubble caps (simple and effective), spinner caps (designed to rotate terp pearls for even heat distribution), and directional caps (with a nozzle to aim airflow precisely). All our carb caps are made from durable borosilicate glass and fit 14mm and 18mm bangers. Our factory‑direct pricing means you get the lowest wholesale cost, with mix‑and‑match flexibility to reach the $1,200 threshold. We keep popular styles in our LA warehouse for fast 2‑5 day shipping, and we offer OEM customization (logo, color, packaging) with a 20‑25 day lead time.

When choosing carb caps for your dab rig, consider your customers’ preferences. Bubble caps are the most beginner‑friendly – they’re easy to use and clean. Spinner caps appeal to experienced dabbers who use terp pearls. Directional caps are great for those who want to chase flavor by moving the airflow around. Always match the cap to the banger size (14mm is most common). Advise customers to clean their carb cap regularly – simply soak in isopropyl alcohol and rinse – to prevent sticky residue from affecting airflow and taste.