It is a 12-foot black replacement coil cord for the Mitel 5300 series of phones such as the 5312, 5320, 5330, 5330e, 5340, and 5360. It has a tail of several inches in length. At rest the coil cord is 18 inches long (not including tail), the 12 foot measurement refers back to the amount of cable used before it undergoes coiling. This black cord may even make a very good replacement cord for some other flat black phone as well, and they’re perfectly compatible with some other phone, since it has the usual 4-conductor 4P4C handset connector occasionally often referred to as RJ9 that fits the vast majority of phones produced. This item is new and comes with a 30-day warranty!