Transcend to the next level with these top notch UFO carb caps by Hippie Butler. Keep your smoke sessions out-of-this-world when you use these elegant and refined glass caps. Each carb cap is beautifully designed to be a perfect accent piece to any of your rigs! Because this cap has a carb you can better control air flow and how much smoke you get in each hit. Each order comes with your choice of one green, yellow, white, blue, clear, or black carb cap. Pairs perfectly with our XL Banger for all your concentrate needs.