Estwing E3-20C Curved Claw Hammer, the E3/20C range with a 2022 facelift! 

Estwing's 20oz Curved Claw Solid Steel Carpenters Hammer range provides unsurpassed balance and temper. 
Curved claws are generally seen as a carpenters claws.  The curved jaw allows a longer and fuller "pull" when removing nails. 
The head and handle are fully polished and forged in one piece. 
The exclusive Shock Reduction Grip® is moulded on and offers the utmost in both comfort and durability, while reducing vibrations caused by impact. 

Proudly manufactured in Rockford, Illinois using only the finest Solid America Steel. 
Smooth Face.
Shock Reduction Grip®.

Original : 20oz : 345mm long with Dull Polish Shaft & Blue Nylon Vinyl Grip Handle
TrueBlue : 20oz : 345mm long with Blue Shaft & Blue Nylon Vinyl Grip Handle
Satan : 20oz : 345mm long with Black Shaft & Red Nylon Vinyl Grip Handle

As with any hammer:
1) Always avoid glancing blows.
2) Do not over or under strike.
3) Never use the side of the hammer.