Can be linked lengthways or sideways to allow the user to create the platform they need. Maximum Load: 150kg each (evenly spread). Injection mould plastic features non-slip pads which prevent load from slipping. 75mm TPR double ball bearing castors for manoeuvrability. Overall Size (W x D x H): 605 x 400 x 120mm., Weight: 9.04 Pounds, Manufacturer: Sealey