Spirafix Anchor Kit with 90° brackets - 4 pieces
These are regularly used for securing timber framed outdoor play equipment. The anchors are easy to fit, only requiring to be driven down by the side of each timber leg, then bolting the bracket to the top of the anchor and then screwing the bracket to the timber. All fittings are supplied with the kit including instructions.
Naturally, their use is not limited to play equipment, but they can be used to secure other items such as kennels, green houses, sheds, gazebos etc..