Glass beads are used to speed up disc travel on concrete courts only. This 3 lb, easy to grab, container comes complete with flip open lid and sifter cap. Ideal for even sprinkle distribution for consistent and increased disc travel. Sifter container can be refilled and used over and over again. 50lb bulk replacement bag is available. Note: Glass beads are extremely slippery and are not recommended to be used on multi-purpose floors where pedestrian traffic is expected. It is recommended to collect glass beads after each use with our BR soft bristled broom shown below.