Sizes:20 X 4 1/4; 24 X 2.10, 16x2.50, 14x1.90, 18x1.95, 16x3.00 Material: Rubber Certificate: DOT, ISO9001 Features:1) Various kinds of electric scooter tires, scooter tires, bicycle tires, industrial tires, TV tires, motorcycle tires, go-kart tires and other rubber products available2) High quality, great performance 3) Sizes:20 x 4 1/424 x 2.1016 x 2.5014 x 1.9018 x 1.9516 x 3.00