The unique blade shape of Blue Spruce Toolworks Optima Dovetail Chisels makes them perfect for light chopping, paring and precision fitting of your finest joinery. The 4" long, 1/8" thin blade is sized just right for close-up, intimate work, allowing clear visibility of your material. The unique concave side bevels allow the chisel to pare into the tightest corners of dovetail joints. They have a refinement, balance, and feel that is unmatched.