The tool I use the most repairing pins is the hollow shaft nut drivers
Now owned by Black & Decker, Craftsman lifetime warranty tools can be exchanged at any ACE, Lowes, NAPA or Sears stores.
Metric Set is same $10.49 price, but for 99% of pins, you want the SAE set
https://brickseek.com/lowes-inventory-checker?sku=5000183227
These have the classic color coding, just like your grandfather's set