The all steel construction, generous base width and length, and the use of the easy lock castor arrangement ensures that the platform is highly stable yet easy to manoeuvre. The easy lock system locks the platform firmly into place when the bottom step is lowered, transferring the weight of the two swivel castors to the fixed legs. Raising the bottom step returns the weight to the castors for mobility. The easy lock is a positive acting cam mechanism. The generous step width and gentle step rise makes the top platform easy to access.