KODA Black Marbelite Billiard Balls feature True Roll & Color Radiance Technology (CRT), which enhances ball control, playability, and the life of your cloth. If you want to take a walk on the wild side, then this edgy new black set is perfect for you with its colored marble accents. Color Radiance Technology doesnt just look the part. This proprietary friction reducing coating performs exceptionally well while preserving the integrity of your cloth with less burn marks during play. Feel the speed and energy with CRT! True Roll Technology is the formulation of balance, weight, and density for enhanced spherical consistency that dominates play with a smooth roll and accuracy in every shot.