Dolly Systems for Easy Movement Unlike conventional steel dollies, our smooth, round-cornered polyethylene dollies won't scratch or chip walls and floor tiles. Formed of high-impact plastic, these dollies are easily cleaned; they are also extremely strong and lightweight for easy handling.  Because of their ability to stack, PMP's dollies aid in conserving valuable floor space in storage. Brightly colored, they can be stamped with your company name for easy identification.