AB Specifications (Dimensions in inches, weight in pounds) Width, overall 40 Length, overall 72 Length, overall (arms extended) 120 Height, overall 52 Load capacity 4000 Net weight 170 Shipping weight 180 List Price (Call for dealer information) Pricing Material: Upperframe, 1 1/4" IPS aluminum alloy pipe. Steel underframe. toe plates, 4" wide steel. Wheels: Comes standard with 6" polyurethane wheels, 4" swivels, 2 with swivel locks. Image: Model AB-SA shown. Only difference between AB and AB-SA is the inclusion of the optional extension arms.