Egg topper
Found this useless
Thermomix
Thanks for your feedback, there is a bit of a knack to it. We find that if you place a boiled egg in the palm of your hands (or a tea towel if it is still hot), then place the base of the Egg Topper on top of the egg then pull the handle and release. The spring mechanism causes a vibration which helps the sharp edge of the topper to cut the shell. Hope that helps