Our high-carbon steel router plane blades fit our Veritas large and medium router planes and our Veritas hinge mortise plane, as well as Stanley #71 router planes (with the height-adjustment nut inverted).
These narrow single-piece blades are available in five metric sizes (2mm, 3mm, 4mm, 5mm and 6mm) as well as a set of all five blades. Sizes stated are nominal. Imperial sizes available separately.
Note: 3mm blade is the same size as the 1/8" narrow blade.