Blockley 815x105 Beaded edge thick butyl inner tube with nickle plated metal stem, as they were in period. It is really imperative that every beaded edge tyre has its own specific beaded edge tube, unlike what else has been pushed on people for decades by the Classic Wholesaler "experts". These people sell you the same tube marked up with a myriad of hugely differing sizes, and supply the same tube for whatever tyre you have ! This is why Blockley has needed to make tubes, doing the job properly as it should be - because we only make this tube size because we make the 815x105 tyre that it fits. The Blockley 815x105 inner tube is made only for the 815x105 tyre size.

For interest, the Michelin 815x105 tube is marked up "935x135, 895x135, 880x120, 815x105", typical of what big companies do, probably to save money and give their wholesaler agents big margins to sell this unsuitable stuff. But the agents are smart enough not to advertise the tubes like this. Alongside each tyre like 815x105 they would put a tube which they say is 815x105, not that this tube fits a colossal 935x135 tyre size also. . .  Note that this is three very different sizes of tube, amalgamated in one which is why things don't work (while Blockley correctly make 3 tubes to cover one from a Michelin). Just imagine how much misery these Michelin tubes have caused people over the last few decades, the tube being about 1 ft. too long, which somehow gets shoved in, while their wholesaler agents persuade you that you need the best by charging a high price and hiding behind a brand name, the heavy weight of them because their tube is too big!

Blockley make one beaded edge tube per tyre because that is how it should be and that is how things were, but this costs so much more to do. In our case 3 times as much because Blockley is making 3 lots of tooling and carrying so much more stock compared to having one tube fitting too many tyre sizes, yet our Blockley tubes cost no more. And they cost no more because by selling direct no one is adding a big chunk on in between. This will give you a little insight into what we think is the rip off that is the Classic Vintage tyre and tubes market!  

These 815x105 Beaded edge / clincher inner tubes have an "on centre" nickel plated valve stem with a length of 75mm (3").