For Sale Are Four Brand New Tube
A high quality inner tube, suitable for 3.50/4.10 - 4  tr87

For tyres commonly found on trolleys, sack barrows, mobility scooters etc.

The tubes have a Bent metal valve fitted ( TR87 )

The code on this inner tube means it fits a 10"-10.5" diameter tyre with an approximate width of 3.5", a sidewall height of approximately 4.1" and fits onto a rim with a 4" diameter.