Durable Material:This Billiards Cue Ball Training is made of high-quality resin material, which is resistant to wear and impact. The Billiards Cue Balls And Billiard Accessories 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. Easy to Use:The Table Training Standard Pool Pro Cue Ball diameter Approx 57.2mm/2.3in, Weight Approx 170g, The billiard cue ball is light in weight, small in size, easy to carry and easy to use. Regulation size of 2 1/4 diameter,Billiards Cue Ball Practice Training Artifact is a good helper for snooker beginner, learners, trainers and teaching clubs. 2-1/4 Regulation Size Billiard/Pool Ball Calibrated and polished for billiard beginner learner practicing.The standard lines and dots for players easy to pot and control the ball. : Made of good resin, unique impact, wear r esistant. Calibrated and polished for billiard beginner learner practicing The standard lines and dots for players easy to pot and control the ball Note: Due size difference, this cue ball NOT for Snooker Regulation size of 2 1/4 diameter Specification: Material: Resin Size: 57mm / 2 1/4 Color: as pictures shown Package Includes: 1pc x Billiard Note: 1. Due to the light and screen difference, the items color may be slightly different from the pictures. 2. Please allow 1-2 cm differences due to manual measurement.