Item Type: Construction Reamer Material: HSS6542 M2 High Speed Steel Shank Diameter: Approx. 12.7mm / 1/2in Maximum Cutter Diameter: 1/2in 1Precise Hole Enlargement: This reamer drill bit aligns and enlarges pre drilled holes precisely without tearing, ensuring smoothly results every time. 2Long Durability: Crafted from HSS6542 M2 high speed steel, this spiral flute reamer bit is suitable for many metal materials. 3Standard 1/2 Inch Shank: With standard shank diameter of 12.7mm, this can be easily and stably connected to a hand electric drill for easy use. 4Versatile Compatibility: Ideal for metal materials including steel, alloy, aluminum, brass, this reamer is perfect for bridge construction and steel structure installations. 5Convenient Organization: This bridge reamer comes with a storage case, convenient for tool storage when not in use. 1 x Construction Reamer 1 x Storage Box