The 1000 gram Kanca Machinist Hammer is the most popular weight for blacksmithing.  
The edges of the face are beveled to a precise 45 degree angle. 
The hammer face and pein hardness is between 52 to 58 HRC. 
The Ash Hammer Handle is suitable for ergonomic and comfortable work.
Hammer head is 5.3" long.  Overall hammer length with handle is 14"