These Titanium coated throwing stars are fantastic. I've purchased some steel ones, and they are great also. The titanium are worth the extra money though, since they are a slightly heavier guage than their strictly stainless steel counterpart.
The Pro Throwing Star 6 Point 4" Grey Titanium features stainless steel construction with titanium coating, extra thickness, kanji script engraving, and is 4" diameter. It's made in China.