The Izumi Jet Black Track Chain is an ½ x 1/8 drive element that works for single speed, bmx, and fixed gear bicycles. It’s designed to be strong and smooth. The Black color of the out plates is made via an alkaline process that results in what’s known as a black oxide finish. This finish both looks good and, more importantly, works as a sealant to protect the metal from corrosion. This chain measures 116 links uncut. It comes with a reusable master link.