The Macaron tip from Double Helix Designs is designed to replace the stock delrin tip for the Recoil RDA. It will also fit the Recoil Rebel, Hawkeye, Antman, and Geekvape B60 (whistle tip removed).

The Nub tip in the photos is just to show what the Black Pearl design looks like.

Midnight Gem, Love Potion, U.P., and Mother Pearl are all glow in the dark.