Quality material: This billiard trainer is made from quality plastic material, which is wear and sturdy, allowing for long term repeated use Easy to use: Equipped with a multi angle design, this Chinese billiard training aid effectively simulates points and is easy to use Billiard training tool: Designed specifically for those who love the sport of billiards, this billiard tool helps train and improve your angles, ensuring your billiards fall into the pocket Portable: With its compact structure and design, this piece of billiard accessories is easy to carry around. Whether you're or in a billiards club, you can use it conveniently Wide application: This Chinese billiard training aid is nice for use during billiards training sessions and also makes a practical accessory gift for billiards enthusiasts and beginners alike Size Chart:30 Degree Angle Color:As Shown Material:plastic Package Contents: 1 * Protractor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.