Description: Finger Exerciser Color as shown in the figure Material: Silicone Size: Gray:6.6LB/8.8LB/11LB Black:13LB/17LB/21LB Approx. 11.5CM x 10.5CM/4.53 x 4.13 inches Hole diameter:Approx.1.8CM/0.71 inches Side height:Approx.2.8CM/1.10 inches 1.Made of high quality material, durable and practical to use. 2.Easy to carry. Easy storage does not take up space. 3.Suitable for patient rehabilitation, fitness, basketball training . Notes: 1. As we all know, different computers display different colors, and the actual color may be slightly different from the figure below. 2. If you find it difficult to choose the size, you can contact me at any time, and we will give you some suggestions, but only for reference. 3. We can accept orders for mixed items, colors and sizes. 4.Please allow little differs due to manual measurement,The above dimensions are only for reference. The product includes: 1 PC Finger Exerciser