This template hinge mortise bit has a 3/4" Cutting diameter with a 1/4" Cutting depth. This bit's shallow cutting depth and center meeting blades make it perfect for routing door hinge mortises using a hinge template. 1/4" Shank. Flush trim template router bits work in your router Table or handheld router. Secure your template to the top face of the work for handheld operations, or to the bottom face of the work when using a router table. It's helpful to have at least a couple of flush trim bits in different sizes in your router bit Collection. 1/4" And 1/2" Diameters make a good combination.