Description: Material: Rhythm sand balls are strong and durable, exquisite workmanship, not easy to wear Traditional African musical instrument: it is like a maracas and also like a castanets Adjustable Strap: Using braided rope, strong and durable, not easy to break Easy to Use:This hand shaker balls can be played by anyone, regardless of skill level, especially for beginners to practice Scope of Application: Can be used for parties, KTV, living room, concerts, etc. It can adjust the party atmosphere and is a great entertainment instrument Size Chart: Single ball diameter: 5cm/1.97inch Package Includes: 2 Rhythm sand balls Note: Please allow slightly errors due to manual measurement and different monitors.