Super smooth running non-marking castors reduce rolling resistance and provide enhanced mobility and manoeuvrability. Mounted on two fixed castors and two swivel castors at the front. Reduces the amount of effort required to move loads by up to 30% against conventional castors. Injection moulded plastic platform with slip-resistant discs to retain loads. 378741DV1 fitted with unique 'push button' braking system. Powder coated folding handle for convenient storage.