Corner Wood Chisel Squaring Tool for Cutting Square Mortised Door Hinge Recesses, Square Off Mortises For Frames, Box Tops, Lids, Doors and Flip up Drawers - Amazon.com
Trend Hinge Recess Squaring Corner Chisel, Quickly Square Up Rounded Corners, C/CHISEL - Wood Chisels - Amazon.com
Trend Hinge Recess Squaring Corner Chisel, Quickly Square Up Rounded Corners, C/CHISEL - Wood Chisels - Amazon.com
Corner chisel - Wikipedia
Robert Sorby 1" Heavy Duty Corner Chisel (287) — Taylor Toolworks