This was labeled as a trigger spring from a J. Stevens model 35, .22 cal. pistol.  There might have been two lengths of these, this should be the shorter one that was used in the .22 cal. pistols, and not the longer one used in the bigger .410 ga. pistols.  I am including the measurements so you can be sure it will fit your pistol.  Length tip to tip in a straight line is .973".  The width tapers from .209" to .268".  The thickness of the spring steel is approx. .022".  The hole is .125" in diameter.  Make sure this is the one you need as I can't take returns.