Gallagher Plastic post (blue, 0,85m + 0,20m spike (pack of 10)Impact resistant top insulator Fit multiple wires with wire clips or threaded insulators (sold separately) Maximum wire height is 0. 85m. Economical, simple plastic portable fence post with impact resistant top insulator. Use a hammer to drive post into the ground without damaging the insulator. Multiple wires can be fitted to the fence with wire clips or threaded insulators (sold separately). The maximum wire height is 0,85m.