What's the best way to clean vacuum tube pins?


What's the best way to clean the pins on NOS tubes? Are there any cleaning products out there or cleaning methods that work well?
mchd1
You can find fiberglass eraser pens at your local Radio Shack. I one they currently stock is a bit different than the one I used years ago to clean tube pins. Here's a link: Pro-Grade Abrasive Fiberglass Pen
Thanks for the link Albert and thanks for the Radio Shack alterative Rbrowne
To clean tube pins I'm going to try this kit from Caig

http://www.mcmelectronics.com/product/CAIG-LABORATORIES-SK-GXMD-/200-460