A 36L green hard plastic bucket with a plastic wringer. The 4 wheels makes the trolley easy to move around. This trolley is ideal for industrial use. It is advised to use a fan mop with this trolley.The trolley is suitable for all applications, but due to its small size provides a sleek appearance that may be used in office buildings where a large trolley would perhaps seem crammed in space.How to assemble:To assemble the wheels:Turn the bucket upside down. Use lubrication on the white plastic for easy insertion, then insert the white/ transparent plastic into the wheel casing. Insert the wheel into the white/transparent plastic. Lastly use a hammer to ensure the wheel is completely in.To assemble the wringer:Slide the wringer into the bucket. The grid side should be facing the inside. (NOTE: The wringer should be placed on the side where the there is a handle on the bucket.)