Try this link:
http://chessgamesshop.com/index.php?c=13&p=62
If they're using the same mold, the King height appears to be 3.5" (89 mm). However, if you can afford it, the wooden ones manufactured by NOJ are totally worth it. One of my favorite sets to play with. Here's my set (w/ 4" K):

I been to the site that sells them along with the wood version but, its real confusing. Any body have the plastic version? If so what is the King height? The wood version is really great looking but, the price is way too steep for me. Thanks!