Edit: These will fit together across an NZ power strip:
http://cgi.ebay.com/3-Universal-Trav...01707320641884
I took a look at the picture and to be honest they do not meet the NZ/Australian plug standard, as neither pin has a 'sheath' as proscribed by the various standards (although I use 3760).
Adapters also shown on EBAY often fail to meet NZ Standard and in some cases been subject to 'recall' by the authorities. You can probably find more info on this @
www.esv.vic.gov.au
energysafe Victoria, declare them as unsafe due to the 'case splitting in half and in some cases overheating, which could lead to fire'............