Features:The billiards training assistant is made of good resin material with unique impact resistance and wear resistance which is very durable and can stay useful after a long time use.It is very easy for you to master the high middle and low practice points and the trainer can master various lever methods quickly. The players tend to place bets and control the standard lines and dots of the ball.The billiards training assistant adopts fine workmanship the billiard ball is calibrated and polished during practice. Suitable for America pool eight ball.The Pool Cue Ball is lightweight and small size easy to carry convenient to use.This billiard cue ball is calibrated and polished and can be used for billiard practice to improve your billiard skills.Specification:Diameter: 5.72cmWeight: 170g5gMaterial: ResinNotes:1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data. includes: 1*Durable White Red Resin Billiards