ST to ST fiber-optic jumpers in 50 micron core size are found commonly in rugged and military applications. We stock these cables in a variety of lengths from 17 inches to 50 m. You will find these cables in use at Fortune 500 companies, the United States military, and any place where rugged connections are required. We also offer custom fiber production here in our California facility for those who need a specific length that they do not find on our website.