Available with or without flanges, the inserts are driven into
wood with a hexagon allen key or hexagon driver. They then provide a hard female
thread which can be used many times without fear of stripping.
They are manufactured from zinc alloy for lightness and
are zinc plated for corrosion resistance.
Please note that plating may be 'yellow' as pictured, or silver colour.
One of the great advantage is that these inserts can be driven
in from the 'screw side' of a fixture, i.e. from the front of a model aircraft
firewall or undercarriage plate, which makes them great where hand access inside
is very tight.