All aluminium steps and platform for strength and weight saving.Conform to the latest PAS 250 specification.Folds flat for ease of transportation.Framework snaps open to give a rigid framework at the back.Platform heights above 500mm come complete with stabilisers.UK made.392131 has telescopic side frames which extend and lock into position to provide a side handrail at both 1000mm & 1250mm platform heights.Fitted with 2 or 4 swivel braked castors.'Anti surf' base plates are available as a factory fitted option in place of castors on request.150kg capacity.