Stairclimber Truck Tri-Wheels 1.6cm

Good quality robust replacement wheels. The price was excellent and promptly delivered.

Excellent quality replacements for step lift sack barrow

Excellent rapid service from this company to the extent that I would use them again.
As for the product, it appears well made and robust and should last. I say that because the original, sourced from another supplier, lasted for 5 years before breaking. I've had the replacement for less than a month however the build quality is such that I have high hopes it will last much longer.