This is a Latch Marking Tool from Major ManufacturingThe only latch marking tool to offer the following features:Interchangeable pilots for both 7/8″ and 1″ diameter latch holes.Adjustable blades for 1″ and 1 1/8″ wide by 2-1/4″ latch faces.Removable blades that may be replaced or sharpened when dull.








