When fixing a nest box to a tree trunk, use our special aluminium nail. This nail is essential to avoid the damage which copper or steel nails will cause to the tree.
Another advantage is that the aluminium will not damage the saw blade if the timber is subsequently sent to a sawmill and will not cause sparks.
The nest boxes are easily attached, and because the nails are straight and smooth they can be removed, even many years later, leaving only a small round scar on the bark.
This kind of nail is, for example, required by the German National Forest Agency (BBA), to hang up nest boxes
Ø 5,0 x 85 mm