Description: 【Design】Features a double layer design that significantly enhances tire support for improved stability during use 【Feature】Constructed with rubber filling, offering exceptional grip and robust sidewall reinforcement 【Application】Specially designed to fit 1.9 inch tires with a diameter of 115~120mm, ensuring compatibility with most standard models 【Material】Made from extremely sponge material in unique red and green colors, combining high performance with an eye catching appearance 【Package Included】Each package includes a pair of sponge inserts; product dimensions are 12.15cmx4cm/4.78inchx1.57inch with a center hole diameter of 54mm Specification: Material: Rubber Sponge  Size Chart: 12.15cmx4cm/4.78inchx1.57inch Hole Diameter: 5.4cm/2.13inch Package Includes: 1 Pair 1.9" RC Tire Soft Sponge Foam Note: Please allow 1-3mm measuring deviation due to manual measurement. Due to the different monitors and light effect,the actual color of the item might be slightly different from the color showed on the pictures.Thank you!