Express nails are for use in concrete, brick walls, blocks and stone. A hole needs to be drilled into the thing you are fixing (such as a wall plate or trellis) and also the masonry and then the express nail can just be hammered in. Quick installations and a sturdy fix are achieved.
M8 x 110mm (drill size 8mm and maximum fitting thickness of 70mm)
M8 x 150mm (drill size 8mm and maximum fitting thickness of 110mm)