The 300mm ITL Insulated Adjustable Spanner is the larger option in this professional range, providing extended reach and increased leverage for working on bigger fixings and applications requiring greater torque. This size is particularly suited to industrial electrical installations and maintenance work where larger nuts and bolts are commonly encountered. Featuring injection moulded nylon 11 handles that exceed IEC 60900 requirements, this 300mm wrench delivers certified protection for live line working up to 1000V AC or 1500V DC. Its Category 'C' certification ensures dependable performance at extreme temperatures from -40°C to +70°C, making it suitable for demanding outdoor and industrial environments. Built to withstand the toughest conditions, this virtually indestructible tool represents the pinnacle of insulated adjustable spanner technology. Backed by ITL's lifetime warranty on both the tool and insulation, plus a 30 day no quibble money back guarantee, it's the professional's