12oz dimple faced replacement head for the Martinez Tools M4 Titanium Finishing Hammer.
Also fits the M1 titanium hammer.
Some of the smooth faces have been powder coated black. You may find that the powder coat will chip. This will not affect the performance of the hammer in anyway, however, if you are concerned about it, you can safely sand off the powder coat with a sander to reveal the smooth steel face.
Spanner to change head is available here