The STANLEY(r) SXWT-PC531 Utility Flatform Dolly takes only seconds to open and close. All the major stress points are made of ultra-durable nylon; other plastic pieces are Polyproplene. Folds flat for easy storage. Specifications: Max. Load: 137kg. Base Plate: 60 x 45cm. Overall Size: Folded 600 x 450 x 77mm, Unfolded 600 x 450 x 167mm. Wheel Diameter: 75mm. Weight: 5kg.