This chalk is of good quality and not powdery as other chalks. It adheres to tip securely and leave no residue on table. The chalk sticks better and lasts longer, works well for more precise shot. The blue dry one is suitable for snooker, helps to do precise shot, and green greasy one for pool, sticks better and lasts longer on the tip. This item is a must accessory for billiard lovers. Features: SMOOTH AND EVEN COATING: This professional billiard chalk delivers a smooth and even coating that will not block or flack. DRY FEATURES: You can touch the feeling of granular sensation, which not easy hang lever and have great frictions when hitting the ball. GREASY FEATURES: Great hang rod quality and very , which is suitable for the middle rod people to use. MINIMIZE THE HIT MISTAKE: The pool chalk will helps minimize the chance of non center hit. A must for billiard accessory. GUARANTEE: Our product have 180 days warranty, if you have any question about this product, please feel to contact us, we will try our best to help you solve your problem. Specification: Material: Calcium Carbonate Color Options: Blue (Greasy); Green (Dry) Size: approx. 2.2 * 2.2 *2.2 cm / 0.86 *0.86 *0.86 inch Weight: approx. 260g (1 Box) Package Included: 1 * Box of Chalk (12pcs)