Our deer fence heavy duty deluxe posts are made of galvanized steel and have a black vinyl coating, which blends in nicely with our fencing. The heavy duty deluxe posts are 1 5/8 inch in diameter to provide maximum support for your deer fence. The heavy duty deluxe posts utilized a ground sleeve to anchor to the ground. The ground sleeve is pounded in the ground until the top is flush with the ground surface using a drive cap (not included, you will need one for every 21 posts), the post simple (Click Merchant link below for full description)