Insulation class 1 (with 3-core cable). With specially insulated handle. Element with Mica insulation – embedded ceramic. Supplied with chisel shaped nickel-plated angled bit. High power soldering irons SI 120, 175 and 251 with angled, nickel-plated tips for professional users and light industrial use. For 230 volt 1-phase AC. Prepared for lead-free soldering. Electrical insulation classes for soldering tools.