Hammer eye drift. Used to enlarge and shape an already  punched hole in a hammer eye.

It’s forged from 4140 alloy .

Used to shape the eye of a hammer once the eye has been opened with a punch. Aproximately 15” over all length . This is sized to cover the range from 1-4 pound hammers. They are available in “as forged” condition ( you Grind to a smooth finish ) for 50% of the finished ready to go to work price.

punching and drifting is greatly improved and tool life extended by using non toxic Forge Ease forging lubricant 

https://frontstepforge.com/products/fuchs-forge-ease?_pos=2&_sid=d5ae2898b&_ss=r&variant=42673611473057

These tools are made once the order is placed. 

YouTube video: How to dress down an "as forged" drift