In the travel adapter plug all possible variants of other countries are available. When connecting an instrument with tabs there are no problems, but in which with safety plug. Since most electrical devices that can take you on a vacation trip, such. As chargers, electric. Toothbrush, radio etc. have flat plugs is, this adapter fully come sufficiently. Because the guides, which usually is the shockproof, too far purely extend into the middle of the plug, the safety plug will not fit. With a little trimming of these guides, which I would not recommend for security reasons, it is after all. For devices with Schutzkantakt I would not recommend this adapter, because the function of the grounding (protection against undercurrent back of the unit) is no longer guaranteed and it may eventually lead to unwanted electrical shock by touching the device.