PRECISO mounts twin wheel castors, with a diameter of 125 mm (5 inches), made in polyamide. They glide like a charm thanks to sealed bearings.
The wheels are anti thread and their grey polyurethane tread is non marking. Each wheel has a twin bearing. On top of that the use of twin wheels dramatically reduces inertia. This means the trolley always starts as if the wheels were already in the rolling direction.