ROJ is an abbreviation for Remove outer jacket. Stripping applies to the actual copper conductors. The jacket on this power cord is a Harmonized (HAR) type as opposed to the USA gauge (AWG) system. GB 2099 China / Unterminated ROJ (Removed Outer Jacket) 3.2 Meters / 10.5 Feet 250 Volts / 16 Amps Each cord is tested for dielectric voltage-withstand (Hi-Pot), polarization and continuity. Sony Green Partner