FISCHER bicycle inner tube, black, 18 inch, Dunlop valve, 35 mm valve length

Quality tube from FISCHER that fits a range of 18 inch bike wheels perfectly.⁠‌‌‌‍‌‌‌‌‍‌‍‍‌‌‌‍‌‌‍‌‍‌‌‍‌‌‌‌‌‌‍‍‍‍‍‍‍‍‌‌⁠ With the 35 mm valve length, you can pump it up quickly and easily, ideal for on the go!⁠‌‌‌‍‌‌‌‌‍‌‍‍‌‌‌‍‌‌‍‌‍‌‌‍‌‌‌‌‌‌‍‍‍‍‍‍‍‍‌‌⁠

When do you need a new bicycle inner tube?
You replace a bicycle inner tube when your current tube is punctured or damaged to such an extent that repair is no longer possible. This FISCHER inner tube has been specially developed for 18-inch wheels, which you mainly encounter on children's bicycles, folding bicycles and some electric bikes. You can recognise the correct size by the ETRTO standard on your old tube or on the side of your outer tyre.

Why choose this specific size?
This inner tube fits various tyre widths within the 18-inch range. The ETRTO standard 47-355/50-355/57-355 corresponds to the inch sizes 18 x 1,75/18 x 1,90/18 x 2,00/18 x 2,125. This means that one inner tube is suitable for multiple tyre widths, which makes replacement simpler. You do not need to purchase a different inner tube for every specific tyre width.

Dunlop valve with 35 mm length
The Dunlop valve is the most common valve type on Dutch bicycles and works with standard bicycle pumps. The valve length of 35 mm is generous, so the valve passes well through the rim and remains easily accessible for inflating. This type of valve is reliable and simple to use, including for children.

Practical compatibility tip
Always check the ETRTO standard on your current tube or outer tyre before purchasing. This is usually listed as small numbers on the side. When fitting, make sure the valve goes straight through the hole in the rim to prevent damage. Inflate the tube gradually to the correct pressure indicated on your outer tyre.