Dconnect 4 core single mode fiber optic cableCorrugated steel tape CLT fibre optic cable with upto 24 x 250um filers within a gel filled central tube with water blocking glass yard. Inner sheath of PE, corrugated steel tape armour (CST), outer PE sheath but other materials and colors are available upon request.Universal distribution corrugated steel tape CLT fibre optic cable is typically used in building backbone application networks where cables may be at medium risk of mechanical damage.