Convenient Set Billiard Chalk Holder & Rubber Case Set Contents: 1 Clip 2 Silicone Chalk Holders and Covers (Square and Round) Chalk is not included. If you need chalk, the Predator chalk shown in photos 4 and 5 is available for 300 yen. Nano Chalk (Blue, Pink, and Gray) is available for 1700 yen.