The PT7400-4C Fiberglass STOCKR'S LADDER® has 4 casters to allow easy 360 degree mobility. Each caster is spring mounted eliminating the need for a separate rake. Slip-resistant TRACTION-TRED® steps on front and rear sections allow for one or two-person jobs. Each side has a duty rating of 300 pounds. The PINCH-PROOF platform easily opens and closes and provides a secure, comfortable work area. Fiberglass rails are non-conductive for working near electricity.