What tool is this???

[nhk750]

I found this tool in my hobby tool collection and I cant figure out what it is for. It is driving me crazy, I looked everywhere on the web too...anyone?

 

[Userofmuchtape&glue]

I have one on my leather man, its a package opener I think. at lest thats what leather man calls it.

 

[jhitesma]

T pin tool: http://www.greatplanes.com/accys/gpmr8050.html

 

[nhk750]

THATS IT!!!!! I remember now, from my balsa building days...Jeez, I must be loosing my mind...THANKS!!!!