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It's an inner tube. It holds air. Keeps your bike tyres inflated. What's the big deal right? These are ideal.
on 16 August 2016
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It's an inner tube. It holds air. Keeps your bike tyres inflated. What's the big deal right? Maybe.
These inner tubes are a little thicker than others. Not that this will provide for protection from punctures, but it would help, particularly if you have puncture-protection tyres on top, e.g. Schwalbe Marathon Plus or City Jets. AND make sure you have tape on the inside of your wheels to cover up the holes that your wheel spokes go in. Otherwise you'll be at risk of having pinch punctures from these, as well as your normal risk of puncture on the outside.
These particular ones have a 40mm Presta valve. This is fine for my needs. Some may prefer longer Presta valves. I have not experienced any air leakage from the valve, after i've tightened it with my fingers. These 700c inner tubes are suitable for tyre widths 28-45..a full wide range.
At £5.20 a piece, it is not the cheapest inner tube. I believe the quality is there, for the extra couple of £ compared to other inner tubes. If you have a puncture frequently then sure, think about price. But if punctures are infrequent, then the extra couple of £ is no big deal.