The Precision Sharpener - WE130 includes the Patented Generation 3 Cam-Lock Vise, making it ideal for sharpening fully-?at-ground blades. The vise is self-centering which keeps the angle on both sides of the sharpener symmetrical. The WE130 includes the Micro-Adjustable, Ball-Joint Guide Rods which allow for 0.05 degree angle adjustments, and has an angle range of 13-35 degrees per side.