Spring-loaded angle guides steer your plain-edged blades from handle to tip across the two-stage, dual angle 100% diamond sharpeners for razor-sharp, double-beveled edges. Its full-length angle control provides precisely focused honing for quicker results. Adjustable sharpening force accommodates a wide variety of kitchen, hunting and pocketknives. Remove the angle guides for regular V-type sharpening. Its base converts into a handy storage box for all components. No lubrication required. Made in USA.