The faces are slightly raked to ensure a square strike; the face size lets you watch your work, not just the tool. Chamfered edges prevent splintering in use.
Suitable for light-duty work, the 3-1/4" (10 oz) mallet is also ideal for children. The 4-1/2" size is standard (16 oz), and the 6" is for heavy mortising (24 oz).