I bought 10 of these because I was moving to Europe. After using them (rather trying to use them), I've thrown them all out. They were simply too dangerous and too useless to keep around. As other reviewers note, they are not the adapters shown in the picture. As other reviewers also note, the plugs fall out easily (not from the UK side, but from the US side). To start, a non-grounded plug will not stay in under any circumstance. Because of the design of the plug (again, not shown), a non-grounded plug will fall right out. In fact, there's a spring mechanism on the contacts that actually works to push a non-grounded plug out. Grounded plugs work better, but the connection is still quite loose. I threw the first one out after a cord that was plugged into it was moved a bit and something inside of it must have shorted, causing it to throw a breaker. I threw the rest of them out when another one shorted and threw a breaker again. Stay away!