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【Package Include】2Pcs 700x35c/43c Bicycle Tubes, 2 Pcs Tire Levers
【Size】This bike tire tube fits 700c tires with 35mm to 43mm diameter. So, this tube can fit 700x38c and 700x40c bike tube
48mm Presta (French) Valve
【High Quality】 Our bike inner tubes are made of high quality butyl rubber material. Better air tightness, heat resistance, and durable. Suitable for most of bicycles wheels
【NOTE】Make sure inner tube match with the size of tire; Inflate a little air before installment, to avoid crack or damage during installment; Install the valve correctly, which must be 90° with steel, and the nut must be well locked; After installment, please check the tube is at the right position between steel and tire, make sure the tubes are not clamped by them; Then inflate the air according to pressure standard of tire

Product Description

Warm Tips:

1. Please kindly confirm the size of your bike tire before you buy.

2. Before inserting the new tube, make sure to check for sharp/pointed objects inside or embedded in the tire, that could puncture the tube.

3. Add a little air (to give the tube form) to the new inner tube before installation. This will prevent it from bunching up, causing a pinch flat, or possibly forcing the tire off the rim.

4. Place the valve through the hole in the rim. The valve should stick out at a 90-degree angle. Screw the valve cap on tightly and securely.

5. After installation, make sure the tube is fully inside the tire and not pinched between the tire and the metal frame. Now you can inflate the tire to recommended pressure levels.

6. Check tire air pressure regularly; Try to keep your tire properly inflated as much as possible. Never overinflate and of course, don’t underinflate.

7. Avoid using a screwdriver or any sharp tools during installation to avoid accidental tube or tire punctures.

8. Don’t run a tire in a flat condition; this may affect the tube.

32mm standard schrader valve

Standard (also called Schrader) valves are the most common valve type for bicycles.
Wider than a Presta valve and typically the same circumference from top to bottom. The pin in the center is a spring-loaded check valve that controls airflow in and out. Check valves are meant to allow airflow in only one direction; your Schrader-valve tube requires pressure on the inner pin to let air in.

How To Choose Tube Size

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 width of the tire.
Select the tube that has the exact same diameter as your tire. Your tire's width should fall into the range of widths listed on the tube packaging.

Equipped with 2 tire levers

Suitable for all bicycles, including Road Bikes, Mountain Bikes, E-Bikes, Children’s Bikes, BMX, and more.
Installation is quick and Easy.

Why choose butyl rubber inner tube for bicycle tire?

Butyl rubber tube has good air retention quality at high temperature and load.
It has good resistance to heat and harsh weather.
It increases tire life due to restricted air loss.
It doesn’t require frequent air filling.
It can increase the service life of the outer tire and reduce the rolling resistance.