Chisel & Plane Iron Blade Sharpening Guide - LINE10 Tools Foolproof sharpening & honing system for chisels, plane irons (does not include stone) Self-centering clamp jaw for positive gripping action Wide Jaw Holds 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 honning it Sharpening stone not included, includes Guide only