Rosin Tech Labs Black Label is an award-winning, collaborative, small-batch line of premium solventless extracts. Sourced from very small runs, the Black Label typically means each batch includes less than 1,000 grams. When most drops are sold out, that's it, except for a select few that may make a comeback. We crafted these with only the finest and rarest cultivars from our partner farms to ensure our RTL Black Label provides a high-end hash experience.