The Nub tip from Double Helix Designs is a chubby wide bore tip that fits 810 (1/2″) openings. Designed with dual o-rings to help with friction fit.

Example fitment:

• TM24 Pro Series RDA (with adapter)
• Authentic Kennedy RDA
• Authentic GOON RDA
• Griffin/Griffin 25
• TFV8 Cloud Beast
• CSMNT RDA
• TFV8 Big Baby Beast
• Druga RDA
• Aura RDA

…etc.

Midnight Gem, Love Potion, U.P., Blue Nova, Mother Pearl, and Moon Rock are all glow in the dark!