This MTP to MTP Coupler has a standard footprint featuring full flange and 2 dust-caps. The coupler body is made of polyetherimide with a stainless-steel spring clip, and dust-cap made of polycarbonate, all to reduce the potential for debris generation. This coupler works with any MTP and MPO Connectors from a 4 Fiber to 72 Fiber. Widely used in trunk cabling and cassettes, this adapter meets appropriate standards and is perfect for your parallel optics and MTP coupler needs.