MFG Tray 8701485136 Dolly with 3" Casters for Stacking Containers, Glass Fiber Reinforce, Plastic Composite, 25.75" x 17.75" x 3", Gray Fiberglass-reinforced thermoset composite construction Temp range: -60 to 250 F 3" Casters standard Color: Gray Dolly stacks with Container models 870008, 875008 and 880008; load capacity 1,200-1,500 lbs