Standard Bulkhead Commercial Slimline IP64 Solid Brass
120mm x 205mm
Neat solid looking brass bulkhead, we sometimes call these the commercial range as we've replaced the wing nuts with Phillips Screws. So there's less danger of the front cover being taken off by someone who shouldn't. As the fitting is manufactured from brass it makes it a favourite for projects situated in coastal regions. The bulb holder is ES (E27) so it can accommodate a wide range of bulbs.
If in doubt consult a qualified electrician.