Castors are used to move heavy objects or structures (scaffolds or trolleys). They consist of a core (often polyamide or steel) and a tire made of a material such as polyurethane or rubber, which determine its load capacity, durability and resistance.
The technical characteristics of the 2800MTR series wheels are:
castor with hole, polypropylene rim, rubber: thermoplastic, precision ball bearing
Brake F04 - Single plastic brake F18 - Double metal brake