Prime TC perimeter wire, high quality robotic lawn mower 500 mt. Conductor: Tinned copper-clad aluminum Number of conductors: 29 x 0.25 mm cables Conductor area: 1.178 sq mm Outer diameter: 3.4 mm Insulation thickness: 1.11 mm Resistance for 500 mt: 7.1 Ohm Coating: HDPE 0.95 g cmc Code: AG6005004 SS