2 Pack Bike Tube Plus 2 Bicycle Rim Liner 20 x 1_75-2_125 Schrader Valve MTB and Road Bike Inner Tube

MORE DURABLE: high-quality butyl rubber compound, Better air tightness and a longer lasting tube. Package include: 2 x Bike Inner Tubes, 2 x Bicycle Rim Liners, 2 x Valve Caps. Size: 20" x 1.75 - 2.125, Schrader Valve, Valve Length: 48mm, Weight: 160g/pcs 24" x 1.9 - 2.125, Schrader Valve, Valve Length: 48mm, Weight: 200g/pcs 26" x 1.9 - 2.125, Schrader Valve, Valve Length: 48mm, Weight: 205g/pcs 27.5" x 1.9 - 2.125, Schrader Valve, Valve Length: 48mm, Weight: 245g/pcs 700C 18 - 25mm, Presta Valve, Valve Length: 48mm, Weight: 195g/pcs 29" x 1.9 - 2.35, Presta Valve, Valve Length: 48mm, Weight: 250g/pcs 27.5" x 1.9 - 2.125, Presta Valve, Valve Length: 33mm, Weight: 225g/pcs 26" x 1.9 - 2.125, Presta Valve, Valve Length: 48mm, Weight: 205g/pcs 29" x 1.9 - 2.35, Schrader Valve, Valve Length: 33mm, Weight: 255g/pcs 27.5" x 1.9 - 2.125, Schrader Valve, Valve Length: 33mm, Weight: 245g/pcs 27.5" x 1.9 - 2.125, Presta Valve, Valve Length: 48mm, Weight: 235g/pcs 24" x 1.9 - 2.125, Schrader Valve, Valve Length: 33mm, Weight: 200g/pcs 20" x 1.9 - 2.125, Schrader Valve, Valve Length: 33mm, Weight: 160g/pcs Tube Material: Butyl How to Choose the Right Size Tube? First and foremost, you want to make sure the tube fits your tire. To determine the size you need to check the side wall markings on your tire where you’ll see two numbers separated by an 'X'. The first number refers to the tire’s diameter. The second number refers to the tires width. Select the tube that has the exact same diameter as your tire. Your tires width should fall into the range of widths listed on the tube packaging.