- material: premium flex plus carbon steel - drop forged, entirely hardened and tempered - cutting edges induction hardened - head polished - surface finish: chrome plated according to ISO 1456:2009 - made according to standard ISO 5749 and EN 60900 - - Advantages: - handles are insulated with double layered - double coloured insulation for additional safety - - Important! - if second layer is visible, replace your VDE tool with a new one.