This is the info from when I bought it. I haven't used it because I could free the wheel from the barrow!

"NEW WHEELBARROW WHEEL INNER TUBE AND BARROW TYRE 3.50 - 8 RUBBER INNERTUBE 35PSi
Item Description:
These Tyres and Tubes set are perfect for replacing damaged or punctured tyres on your wheel barrows or any other 8" wheels.
Features:

14" (360mm outer diameter)
3.5" (90mm tyre width)

Fits Standard 8" Rim (most common size)

Schrader (basic automotive) tube inflation valve

35 PSi Maximum inflation

Durable grip and versatile tread

Not for highway use

Manufactured for the majority of wheelbarrows, tipper trolley, garden trailers ets

NEW WHEELBARROW WHEEL INNER TUBE AND BARROW TYR 3.50 - 8 RUBBER INNERTUBE 35PSi"

New WHEELBARROW INNER TUBE AND TYRE (CH48)