These chisels are a great value and hold their own pretty well against chisels that cost a lot more.
Finewoodworking rated them "good" across the board with the exception of a "Very Good" for chopping.

These bevel-edged chisels are hardened and tempered under controlled conditions and accurately ground for precise control.
* Handle is square with rounded corners for comfort and to prevent rolling
* Made of indestructible polypropylene to withstand heavy mallet and hammer blows
* Overall lengths 9-3/4"-11", blade lengths 3-1/2" to 4-1/4"
These tools are factory ground and require honing before use.

from $12.99