A Monomolecular Lash, also known as an "EM-Lash", is a small device that projects a single strand of high energy molecules, creating a whip capable of slicing through almost any object. These weapons are described as being extremely difficult to control, although certain wielders of this weapon are able to use them effortlessly. Usage inside a ship is extremely dangerous, due to the lash's ability to tear straight through the hull of the vessel, and cause a serious hull breach, killing the user as well as any other occupants, as they would be exposed to hard vacuum.