SIENOC 20 Pcs RJ45 Coupler Ethernet Cable Extender Female to Female Straight Modular Inline Coupler (20 Packs RJ45 Female to Female Plug Coupler) Type : RJ45 female to RJ45 female connector Plastic housing Gold plated contacts, straight-through wiring Material : PC/copper/Tin plated Standard: 8P8C (female-female) Dimension: 34 x 15 x 21mm/1.35 x 0.62 x 0.82inch(L x W x H) Type : RJ45 female to RJ45 female connector Plastic housing Gold plated contacts, straight-through wiring. Material : PC/copper/Tin plated Standard: 8P8C (female-female) Dimension: 34 x 15 x 21mm/1.35 x 0.62 x 0.82inch(L x W x H)