After building the frame of your modular cart, it is time to choose the type of castors you want to equip it with. The Admiral castors are perfect for this job as they don't leave any marks on soft surfaces such as ballet floors. Castorset WACS160C: · includes 4x swivel castors with no brake · these castors have a diameter of 160 mm and a load capacity of 300 kg. SPECIFICATIONS Colour blue Castor size 160 mm