A sizing broach is a cutting tool used in metalworking to create or enlarge precise internal holes, keyways, or other shapes. It's a specialized tool, often used with an arbor press, that is pulled or pushed through a workpiece to achieve the desired size and shape.

A Sizing Broach is a precision cutting tool used to bring a pre-formed hole, spline, or keyway to its final, accurate size and finish in one pass, usually after rough broaching or other pre-machining. It removes a very small amount of material compared to roughing broaches, focusing on accuracy, surface finish, and profile refinement rather than heavy stock removal.