ANGLE FIXING TOOL This sharpening guide tool can fix and adjust the angle at which the edge of the chisel comes into contact with the whetstone, so that the entire edge of the knife can be sharpened evenly. This makes sharpening much easier. It is a useful addition to any sharpening setup. COMPATIBLE WITH CHISELS AND PLANER BLADES The edge sharpening stand chisel blade is compatible with chisel and planer blades. You can fix chisel and planer blades from 0 to 2.5 inches by adjusting the knob, which covers commonly used sizes. PRECISE ANGLE ADJUSTMENT Obtain standard sharpening angles by adjusting the distance between top of chisel and sharpening guide jig: get 25 at 2.9/73mm for planer blades and 2.4/60mm for chisels; Get 30 at 2.2/55mm for blades and 1.8/46mm for scissors. ATTACHED WIDE ROLLERThe chisel sharpening jig has widened rollers at the bottom so you can easily sharpen your chisel by simply rolling it back and forth. Wider rollers are more stable and ensure rigorous and smooth work. DURABLE ALUMINUM ALLOY MATERIAL The angle guide body sharpener was made of aluminum alloy, heavy enough to support the weight of most scissors. It is locked by metal nails, even if thrown, no knife will fall. You can use it with confidence.