5 x BLUE Heavy Duty Wheeled 600 x 400mm Tote Crate Dolly 250kg Warehouse Skate
5 x Heavy Duty Wheeled 600 x 400mm Tote Dolly 250kg Warehouse Skate Dollies. 250kg capacity although I have witnessed them carry much more, car engines, water buts ect. These can be linked together to form a chain.