Carbatec - New Product! Quickly & accurately remove rounded corners with our Carbatec 90 Degree Spring-Loaded Corner Chisel! -Great for squaring corners on hinge and lock faceplate recesses -Machined alloy body with
Ramelson - 90 Degree Timber Corner Chisel
Toma Woodworking Corner Chisel Chisel Tools 90 Degree Wood Door Hinge Mounting for Squaring Hinge Recesses - Walmart.com