Product Name:Billiard Ball Shot- Exerciser The Billiard Aim Trainer is a versatile training aid designed to help improve your billiard skills. It is suitable for practicing different types of cue , including high, medium, and low . With this tool, you can enhance your billiard and cueing techniques in the comfort of your own home. It is for both beginners and professional players, and it is built to last. Size: Round diameter about 5.7cm/2.24 inches Base length about 7cm/2.76 inches Overall height about 6cm/2.36 inches Hole diameter about 1.5cm/0.59 inches Material: Acrylic Color: As Shown Package Contents: 1 x Billiard Ball Shot- Exerciser 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.