Elevator Wire Rope is specified by its diameter, construction, finish, grade, lay, preforming, and core. Diameter is expressed in inches or millimeters and is the diameter of the smallest circle which can be circumscribed about the rope. The rope construction is generally stated as the number of outside strands and the number of wires per strand. A Bright finish, Right Regular Lay, and Fiber Core are understood to be specified unless otherwise stated. Prestretching, galvanized finish, left lay, lang lay, special fiber core, nonpreformed wire rope, and independent wire rope core are all available for special ordering.