Schwalbe Av19

The bicycle tube is made of 100% recyclable rubber. It is suitable for multiple tire sizes and features a 40 mm Schrader valve, also known as an auto valve. The tube weighs approximately 220 grams.

The bicycle tube is compatible with the following tire sizes:

• 40-622 | 28 x 1.50 | 700 x 38C
• 40-635 | 28 x 1 1/2 | 700 x 38B
• 42-622 | 28 x 1.60 | 700 x 40C
• 44-622 | 28 x 1.625 | 700 x 42C
• 45-622 | 28 x 1.70 | 700 x 45C
• 47-622 | 28/29 x 1.75
• 50-584 | 27.5 x 2.00 | 650B
• 50-622 | 28/29 x 2.00
• 54-584 | 27.5 x 2.10
• 54-622 | 29 x 2.10
• 55-584 | 27.5 x 2.15
• 55-622 | 28 x 2.15
• 57-584 | 27.5 x 2.25
• 57-622 | 28/29 x 2.25
• 60-584 | 27.5 x 2.35 | 650B
• 60-622 | 28 x 2.35
• 62-584 | 27.5 x 2.40 | 650B
• 62-622 | 28/29 x 2.40

The sizes mentioned above are ETRTO, inch, and French sizes.

The ETRTO measurement consists of two numbers, for example, 40-635. The first number, 40, is the width of the tire in millimeters. The second number, 635, indicates the inner diameter of the bicycle tire in millimeters.

The inch size consists of 2 or 3 numbers. The first number is the diameter of the tire in inches. The second number is the height of the tire, and the third number is the width of the tire. The German measurement system also uses inches, but there the second number is the width and the third is the height.

The French size consists of two numbers plus a letter, for example: 700 x 38B. The number 700 indicates the outer diameter in millimeters. The second number, 38, gives the tire width in millimeters. The letter (B) denotes the rim size. The tire size is often indicated on the sidewall of the tire itself.