Dastra Brand Carving Tools - Made in Germany by the same family since 1835 with a patented formula steel, forged, ground, heat treated and polished  to exacting standards to take and hold the finest cutting edge possible.  Chisel is about 5-1/2" long, making it comfortable and easy to control while doing delicate and precision  lock or trigger inletting jobs.  We've been using the same set of  Dastra chisels for over 30 years for gun building and other woodworking projects. Flat, available in two sizes;  4mm No. 66W2014 or 6mm No. 66W2016.