Square Adapter 107x107mm (4") via_enabled This adapter is suitable for

This adapter is suitable for use with 1" square posts

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Square posts typically require the flat sides lining up

Square Adapter 107x107mm (4") via_enabled This adapter is suitable forSize Internal diameter of 107x107mm. This adapter is suitable for driving 4x4" square posts. To drive in 4"x4" posts, a pilot hole must be made in the ground first. A 2" pilot hole is the recommended size. If the ground is very hard or dry, fill the pilot hole with water and leave to soak before driving the posts into the ground. Our Pilot Core Tool can be used to make a pilot hole, or alternatively an Earth Auger. Compatible with the Classic35 and