Estwing E3-20C 20oz Curved Claw All Steel Hammer E3/20C just got a face lift! 

Estwing's 20oz Curved Claw Solid Steel Carpenters Hammer provides unsurpassed balance and temper, now the UK's best selling hammer!

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®. 

Traditional : 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.