This fixing method has the distinct advantage of being a through fixing thus enabling the user to ensure that the material to be secured is in the correct position prior to fixing The design of the nylon sleeve ensures a solid fixing & long life They are generally used for fixing into concrete brickwork & blockwork The most common applications are for securing wall plates sole plates door frames & window frames Time is saved as no marking out is required before hand Size M8 x 80 Max Fixing Thickness 35mm Min Hole Depth 50mm