Deadblow

The most important is that the feel of the chisel's cutting action should be transmitted through the mallet to the operator. Wood, steel and rawhide do this well; deadblow mallets don't.

Source: wiktionary

The lack of vibration makes deadblows a good choice for case construction and other large panelwork, or wherever you need to hammer parts home in a controlled manner. But this style of hammer also excels at smaller work, too.

Source: wiktionary