To connect two fiber optic cables with SC and ST ends, you’ll need an adapter. The AD-SCM-STF-S adapter offers a convenient way to connect two fiber optic cables to lengthen the cable run or join two cables with dissimilar fiber connector types. It supports a single-mode fiber optics connection. The adapter is manufactured from durable lightweight plastic for long life. It features alignment sleeves to ensure signal integrity and dust caps to keep out contaminants and particles when not in use.