Strongcast 100mm x 100mm four-way pointed top reinforced concrete posts. Please note: The 9ft and 8ft versions of these posts have 3 mortise holes and the 5ft, 6ft, and 7ft versions have 2 mortise holes. All posts have bolt holes to enable the fitting of Gravel Boards. Timber can also be fitted to the sides of the post to enable the hanging of gates.