ar31791 is correct, its a "key" for the built in security lock on newer Taurus pistols. I have one sitting on my desk in front of me now.
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http://www.taurususa.com/security-system.cfmIt is a safety lock for a handgun.
+1Its the key to a security device built into newer Taurus handguns. The gun can't be cocked or fired until the security device is unlocked.
cool i found it in some old stuff from when my grandma past away
That stick-bit, is it hexagonal in section?
yes it has six sides
Oh, and if this is the right "Tarus", then maybe it's a widget for adjusting some sort of high-end tool?