Use this FO coupler to connect two fibre optic patch cables. Ideal for keystone patch panels and wall plate installations This coupler has two fibre optic LC connectors. For 9/125 µ, 50/125 µ and 62.5/125 µ (Single Mode/Multimode) For LC plugs with UPC polished ends For installation into keystone panels measuring 19.2 x 14.9 mm Colour: White / aqua