Foolproof sharpening & honing system for chisels, plane irons, and scraping blades, Use of this jig will make the process as easy and accurate as possible. Very easy to use, with a Self-centering clamp jaw for positive gripping action, Featuring 2 jaws Wide Jaw to Hold larger blades up to 3 1/8" Narrow Jaw holds chisel blades up to 1 7/8" Make the best of your chisel by regularly sharpening and honing it, you'll get professional results every time.