RJ-45 (F) to RJ-45 (F) Ethernet Inline Coupler (Black) - Extend the Length of Two Ethernet Cables! RJ-45 Inline Coupler General Features: Black color Extend the length of two RJ-45 Ethernet cables RJ-45 Female to Female connection Unit Dimensions: 0.8 x 0.5 x 1.4-inches (H x W x D, approximate)