VDE tested to 10;000v and guaranteed to 1;000v. Premium quality steel with molydenum and vanadium for flexibility and lifetime. CNC milled tips for high precision for best fit and reduced cammout effect. Black phosphate on the tip for grip and corrosion resistance. Slim shank diameter for access to low lying screw applications. 2 component grip with softgrip for comfortable handling. 3 sided design for non slip and maximum power transfer. Slim design at handle for low power/torque applications and fine electrical work. Laser engraved with the reception on the top of handle for easy identification. Anti roll; 3 sided collar on handle.