This is by far the best 30x3 1/2 (30x3.5) inner tube available anywhere, which is why we have made these "Blockley Superior" quality tubes. Far thicker and heavy duty than anything available elsewhere, and made fom the best material butyl. This 30x 3.5 tube is fitted with a metal nickel plated stem. This inner tube fits our 30x3 1/2 tyre, and has correct dimensions which are quite different to other tubes available.

With the thicker walls, and being made from the best material butyl, our 30x 3 1/2 tubes will ensure they do not lose pressure like the other tubes available - which is important because beaded edge / clincher tyres need to be run at higher pressure, because running on low pressure leads to problems and tyre damage. And tubes that leak will lead to lower pressure which will lead to other problems. All valve stems we have seen from the period are nickel plated, which is why the Blockley tube valve stems are also nickel plated. These are a tube the likes of which customers have never seen before. These superior 30x3 1/2 tubes cost much less than a branded Michelin tube, and this is only because we sell them direct. When you see these Blockley 30x3 1/2inner tubes you will understand why you should have them, and why we needed to make them to accompany our 30x3 1/2 Blockley tyres!