Align existing holes and enlarge undersized holes before bolt or rivet installation .
Commonly used in bridge, construction, steel erection, and automotive truck trailer industries, especially use in structural materials such as steel, iron, nickel, copper, alloy aluminum, brass, plastic cast iron etc.
Made of high-quality high-speed steel 6542 (M2), it is durable and has excellent cutting performance.
Different sizes can meet various needs: 1/2", 3/4", 3/8", 5/8", 13/16".