feature: Made of high quality stainless steel, durable. Carbon steel clamping block, stable clamping, unlimited forward and backward during sharpening.< /p> Keep the direction consistent, non-slip, smooth and safe. You can adjust the clamping width by rotating the screw cap, Internal clamping range: 0-55 mm External clamping range: 36-86 mm Suitable for sharpening the edges of wood chisels, planers, blades, chisels, planers and flat scissors. Turn the nut counterclockwise to tighten the chisel or other tool, and move it up and down to freely adjust the blade angle. Then tighten the screw cap clockwise and the edge of the blade rests smoothly on the whetstone or grindstone, sliding it back and forth until your tool becomes sharper and more precise. 1. Due to different displays and lighting effects, the color of the item may be slightly different from the color shown in the picture. 2. Please allow a little measuring deviation due to manual measurement.