The IDEAL Electrical 35-9104 7-Piece Insulated Nutdriver Set includes nutdrivers that are VDE certified to 1000V AC. They are designed to meet ASTM F1505-01, EN, DIN and IEC 60 900 test standards. Each nutdriver is precision formed for heavy-duty work and features a tempered blade that is finished with black oxide and super hardened for maximum quality. The ergonomic cushioned grips reduce muscle fatigue and provide 40% more torque than conventional handles.