Perfect fit: Our bicycle inner tubes fit most road bikes with 700 x 35c, 700 x 38c, 700 x 40c or 700 x 43c tires. Valve type and length: Schrader valve; 48 mm (1.89 inches) with spool cap. Wheel size: 700c Durability: Our bicycle inner tubes are made of high-quality material, which reduces flat heels and has a longer life than ordinary bicycle inner tubes. High-quality rim tape: It is made of high-quality environmentally friendly material to protect the inner tube bicycle from flat feet caused by punctures. colour:Black+red Material:Butyl rubber Package Contents: 2 x Bike Inner Tube 2 x Rim Strip Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.