Improve your kitchenware collection with this sharp pro <b>knife sharpener</b> from <a href="www.selfridges.com/GB/en/cat/home-tech/home/zwilling-j-a-henckels" style="text-decoration: none"><font color="black"><b>Zwilling J.A Henckels</b></font></a>. Able to create an angle of approximately 30° or 20° and resistant to sliding when in use, this is is the expert choice for sharpening your knives for kitchen use.