Castor very interesting due to its very low height!
Indeed, its total height of 54 mm (overall height) allows you to place almost any furniture on castors without raising the working height too much for an operator.
The polyurethane (the material of the wheel) is ideal on smooth floors but without gravel for this small diameter.
Inside the wheel are 2 roller bearings to limit the pushing effort of the operator.
The offset of the wheel as well as its very low footprint allow it to be placed in very tight spaces without hindering its pivoting. Indeed, its fork only extends a few millimeters (about 6 mm from the plate).
The steel thickness of 2 mm allows it to support very high loads relative to its very small diameter.