Keep your rotary airer in place with our metal ground spike. It provides a stable base for your airer to sit without the need for concrete. The spike has two plastic adapters for different size poles. The soil spike is made of galvanised steel, so it's corrosion-resistant too. Fits pole diameter 32mm (by using two adapters provided). Fits pole diameter of 38mm (by using one adapter provided). Fits a pole diameter of 50mm by using the steel spike alone. Stability - provides a stable base for your airer to sit into stronghold – the shaped spike provides a strong grip and fixes firmly into the ground. Quick installation - the soil/ground spike goes into the ground without the need for concrete and saves time.