This six-sided green chalk contains all the best features from the Kamui .98 and 1.21 with none of the downfalls such as marking the cue balls and leaving those nasty chalk stains on the felt. The Roku chalk is specially formulated to cover your tip evenly and last giving you maximum accuracy with each shot without losing contact to the ball. Your hit consistency and ease of english will be up, and miscuing will go down drastically. With a longer lifespan, this chalk is going to last giving you peace of mind that when you need it, you will have it.