1Aluminum Alloy: The pocket chalk holders are made of premium aluminum alloy, which is durable and easy to clean. The storage box has a bright finish and comfortable to touch. 2Chalk Storage: The small portable case is designed to hold the cue tip chalk. The round billiard chalk case is very convenient to use. It can easily fit into your pocket. 3Compact and Portable: The round billiard chalk case is convenient to carry around for players to use at any time. the box has diameter of 3.1cm and height of 2.3cm. 4Clean and Convenient: This cue chalk holder can help you lubricate cue tip without smudging your hands. A must for billiard lovers. The lid can keep chalk in nice condition when it's not in use. 5Keep In Handy: The chalk case is great to chalk your cue and keep it handy and easily accessible. Don't let chalk make a mess in your pocket.