I've got 4 brand new Michelin airstop tubes. On the boxes it says for 7.00-7.50 and 8.25 x 16 tyres.
The only problem, as I just discovered when I went to use one, was that they have the lorry long type valve on them (about 2" long with a 90degree bend as they come out of the rubber) which is no good for a LR rim.
A bit like these:
Although my ones, you can unscrew from the rubber tube itself... there's a small threaded portion that the main "valve" fits to.
Are these any good to anyone? I'll swap them for 4 normal 7.50 tubes.
Like I say, they're brand new (although the boxes are a bit grubby)
Located in Swindon J16 M4, but can post.