Blockley 710x90 inner tube, with nickel plated metal stem, as they looked like in period. A super thick and dedicated 710x90 sized inner tube, made from teh best material Butyl. Blockley makes this inner tube only because we produce the beaded edge 710x90 tyre that we need this tube size for.

At Blockley we make one tube for one tyre, on our own dedicated tooling. This is the 710x90 size for the 710x90 Blockley tyre, and as all Blockley products, it is the best that you can buy. That is why Blockley exists.