- 2.5 mm galvanised steel for greater conductivity. For under gate and lead out applications. - Suitable for all properties. - 2.5 mm (12.5 ga) galvanised steel for greater conductivity. - 3 x more conductive than 1.6 mm (16 ga) underground cable. - Use with Stafix Joint Clamps. - Resistance of 35 ohms / km. - Easy to strip with soft steel core for greater flexibility.