The billiard exerciser is made of high‑quality plastic , strong , and wear‑resistant . Billiards rod pool stroke trainers is exercise stability . Stable steering of the cue and can exercise billiards . The rod angle of billiard stroke exerciser is adjustable . The billiard stroke trainer is detachable . The rod angle can be adjusted by rotating . The closer theis to the cue ball , the better the effect . The pole does not touch the exerciser . Color: Black & Transparent Material: Plastic Package Contents: 1*Billiard Convenient Practice Tool 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.