The exact angle on the Aligner™ Guide will depend on the knife you are using with it. See the diagram below. Based on a 1” blade, the settings range from 16 degrees (shallowest) to 40 degrees (steepest). The seven choices are: 16, 20, 24, 28, 32, 36, and 40 degrees. As you extend the guide rods out on the knife clamp, the angle of your knife becomes steeper relative to the diamond sharpener.