400 KV POLYMER SUSPENSION INSULATOR. - BRAND/MANUFACTURER: ISOELECTRIC. - MODEL: ISI-ROK-A045R-120SB. - NUMBER OF SKIRTS: 89 (45 SKIRTS WITH A DIAMETER OF 145 MM; AND 44 SKIRTS WITH A DIAMETER OF 110 MM). - INSULATOR LENGTH: 3.4 METERS. - WEIGHT OF EACH INSULATOR: 13 KG.