Keystone inserts are a great way to customize wall plates or patch panels to fit your install while providing a professional look. Fiber keystones are used for high speed data transmission and broadband internet in fiber optic applications. This keystone adapter will mount into any keystone wall plate or patch panel. Features: * UPC polish * Color: Gray body with white keystone * SC Simplex * Multimode * Fits into any Keystone Opening * Female - Female