Washable and Reusable: Not easy to stick, not easy to scratch, lightweight mixing bowl can be washed, suitable for repeated use. Rubber Mixing Bowl: Made of rubber material, flexible and durable,perfect tools specially designed for dental work. It can be used for a long time. 3 Different Size: Small one: 3.31*1.97inch/84*50mm. Medium one: 4.25*2.32inch/108*59mm. Large one: 5.12*3.78inch/130*96mm. Meet all your needs. Ideal Accessory: bowl can be used to mix dental materials such as alginate and plaster. The perfect tool specially designed for dental labs. Portable: Light weight and in small size, it doesn't occupy much space, easy to store and carry, suitable for professional use.