Allows one person to easily move engines or engine transmission combos Gentle "V" design provides self centering stability Free up storage space in your garage or shop Works with heavy duty Auto Dolly Low profile, very rugged steel Attach the Engine Dolly Attachment to a heavy duty Auto Dolly, set your motor into the V shaped Engine Dolly Attachment and roll it around the shop. Facilitates efficient floor cleaning. Poly casters won"t mar floors. AUTO DOLLY NOT INCLUDED.