24 SINGLE MODE (OPGW) GROUNDWIRE COMPOSITE OPTICAL FIBRE CABLE;CENTRAL CORE,WITHIN A PROTECTIVE TUBE;CABLE DIA 11.1 MM;LEFT HAND LAY;DRUM SIZE 3000 M, DRUM WEIGHT 992 KG,DRUM SIZE 4000 M,DRUM WEIGHT 1286 KG,DRUM SIZE 5000 M,DRUM WEIGHT 1620 KG,DRUM SIZE 6000 M,DRUM WEIGHT 1934 KG;