Easy Twist-On, Twist-Off Dolly Provides Safe Mobility And Handling Of Heavy Loads. Five Rugged Casters Help Keep Fully Loaded Brute Containers Stable, Even On Rough And Uneven Floors, And Swivel Smoothly For Easy Maneuvering. Brute Structural Foam Dolly Features A 350 Lb. Maximum Load Capacity And Fits Rubbermaid 2620, 2632, 2643 And 2655 (Sold Separately).