Description
1. Bike tire tube is made of elastic butyl rubber, and have an innovative nanocoating process on the surface, which increases the heat resistance, cold resistance, abrasion resistance, aging resistance, tightness and air chamber service life by more than 30%.
2. Innovative nanocoating process + elastic butyl rubber determines the tightness and self-sealing of the air chamber, which can automatically seal punctures up to 3mm.
3. Sizes: MTB inner tube 26/27.5/29 x 1.75/2.125-AV32 (Schrader); Bicycle inner tubes 26/27,5/29 x 1,95/2,125-AV32 (Schrader); Bike inner tubes 26/27,5/29 x 1,95/2,125-FV48 (Presta); Inner tube 26/27,5/29 x 2.125/2,40-AV32 (Schrader); Mountain bike inner tubes 29 x 2.125/2.40-FV48 (Presta);Wide range of sizes to choose the right bicycle inner tube for your bike.

Packing
2 bicycle tube + 2 bicycle tube pads + 2 mounting rods + 1 user manual; Bike tube pads wrap around the wheel and are used with bicycle tube to protect inner tube. The mounting rods are made of stainless steel and are very durable with a smooth surface, so you don't have to worry about the bike tube breaking or getting damaged.

Perfect after-sales service
If you have any quality problems with the product, please contact us in time, we will give you a satisfactory answer; Working days: 08:00-18:00, 24 hours to respond on weekends.

Practical tips
1. After buying a bicycle tube, put the inflated chamber in water and slowly rotate it to check for air leaks.
2. Before installation, clean the inside of the outer air chamber to prevent dirt and sharp objects in the chamber from piercing the chamber. Clean the aged air chamber cushion inside the wheel and replace it with a new air chamber cushion.