Function: 1 For use with tricycle scooters, electric scooters, electric scooters, wheelbarrows, carts, etc. 2. This pattern design provides excellent control. 3 Square blocks with thin lines provide excellent grip and traction. 4 Made of high quality rubber material, durable and long lasting. 5 Easy to install and convenient to use, perfect for replacing broken or old one. Specifications: Item Type: 3.00 ‑ 4 Tires; Material: Rubber; Color: As Picture; Outer Diameter: Approx. 9.8 inches (25 cm) / 9.8 inches (10 cm) / 3.9 inches (9 cm) / 3.5 inches (1170 g) / 41.3 oz (1 mm) Inner Tube.