WHY IT HITS DIFFERENT. The Kingroll is a 1.3 gram, kief-coated pre-roll, infused with Kingpen's award-winning oil and combined with high-quality flower. Kingpen Oil - Kingrolls are infused with Kingpen's award-winning oil in strains you know and love. Kief-Coated - Golden kief, sourced from premium flower, for an added punch of cannabinoids and natural terpenes Natural Rolling Paper - Super thin, unbleached paper with the highest quality-control standards, so you only taste the terps, not the paper. Premium Flower - High quality, single strain, never shake.