These blades are high quality and maintain a very sharp edge far better/longer than many other brands I've tried. They are very sturdy and don't bend or break easily. However, the dispenser is very difficult to use. Getting a blade out of it is quite the struggle even when very sturdily mounted to the side of my large tool chest. I recommend using the type of blade holder/knife that accommodates some spare blades to help reduce the frustration of trying to retrieve a fresh blade.