"Never ever buy anything but wago connectors. These are fantastic. The snag eliminator for inspection and test. No more poor connections. No more high resistance joints. I've used this range of products for 2 years and never had a problem. Installation is so quick and easy especially for downlighting. Never mind the cost, think of the time you save cramped up in a loft full of insulation on your knees trying to fit a joint. This product will more than half that time and make every connection perfect! Can't recommend highly enough, a product that does everything it says to perfection."