Retractable taken exists in many brands, and some are very expensive for a simple. In addition, it is one of the few with 4 sockets, and more all with Earth. In this brand you can even find it in 5 or 6 outlets. Installation is easy, but providing a hole saw 8 cm in diameter, and voila. Just a few minutes with the right tool. The top is chrome plated and comes with pressure. To start the plug, pushed back and centimeters; there are more than the shoot.