Heavy Duty Recessed Caster. 3″ 75mm Wheel. Offset to Suit Extrusions up to 35mm/1.38″.Safe Load: 150Kg (Per Caster). Die-cast heavy duty recessed castor with 75mm/3″ diameter wheel. Offset to suit extrusions up to 35mm/1.38″.. recessed caster-heavy duty recessed caster