Waterproof Silicone Tire Insert, 1.9 Wheel Tires 108X42Mm Foam Fit Inner Filler For 1/10 RC Crawler Axial SCX10 Capra RXB10 TF2 Redcat Gen7 Gen8 TRX4 (4 Pcs/Soft-Green). Easy Installation: With A Size Of 108x42mm, Weight Of 75g/2.47oz/Pcs, These Inserts Are Specifically Designed To Fit Perfectly Into 1.9 Tires.

【Silicone Rubber】This tire insert is made of silicone rubber material, durable and long-lasting, without worrying about water ruining inserts, also easy to disassemble and clean. It improves traction and grip to help your rig to out of tough situations. 【Three-layer Design】The silicone insert has 3 hollow layers that users can cut off part of the liner or insert foam strips to realize different degrees of softness and hardness. 【Smooth and stable ride】Stronger and more resilient than foam inserts, the silicone rubber insert provides a rock-solid side strength, better able to hold the weight of heavy rigs, helping to maintain the shape of the tire, which is not deformed under load and making it better suited to the road surface. 【90g/Pc】Our 1.9 tire insert is specially designed for climbing cars, addtional significant weight for lower CG, improve the stability and control performance of your rc cars.