Note: The size may have 1-2mm differs due to manual measurement. Thank you for your understanding. Tire Specifications: Part Number: T1011 Compound: INJORA S5 (Super Soft & Sticky) Material: Rubber Outer Diameter: 64mm (2.52in) Width: 24mm (0.94in) Inner Diameter: 25.4mm (1.0in) Each Tire Weight: 15g (0.53oz) Insert Specifications: Material: Silicone Rubber Weight: 11g/pcs Yellow Inserts: Super Soft Package List: 4 * RC Car 1.0" Tires and 4 sets(4pcs) of yellow Inserts