1、HSS6542, M2 HSS MATERIAL: Construction reamer is made of premium HSS material, sturdy, durable, and long lasting, suitable for various metal materials. 2、ALIGN AND ENLARGE HOLES: Reamer bit is used to align existing holes and enlarge undersized holes before installing bolts or rivets. 3、SMOOTHLY OPERATION: The reamer bit aligns and enlarges pre drilled holes, resulting in smoothly, no tear hole formation. 4、WIDE APPLICATIONS: Construction reamer is commonly used in bridge, construction, steel structure installation, and other metal structures. Suitable for steel, metal alloys, aluminum, brass, plastic, iron, nickel, copper, cast iron, and more. 5、EFFICIENCY AND ACCURACY: Reamer bit to enhance your drilling hole enlargement tasks with superior performance and accuracy.