Features DURABLE MATERIAL: Excellent HSS6542 M2 high speed steel material, strong and durable, possess long life, suitable for many metal materials. MAIN FUNCTION: Used to align existing holes and enlarge undersized holes before installing bolts or rivets. The reamer bit align and expand the pre drilled hole, making the reaming smooth without tear. APPLICABLE SCENARIO: Hex shank reamer is commonly used in bridge, construction, steel structure installation and other metal structures, applicable to steel, metal, alloy aluminum, brass, plastic, iron, n-i-c-k-e-l, copper, cast iron materials. SIZE INFORMATION: Spiral flute hex shank reamer has a handle diameter of 31.8mm and a maximum kni-fe diameter of 13/16 inches. WITH BOX: Aligning reamer equipped with a storage box for easy storage, portability and access, and also prevent damage and loss. Specification: Item Type: Hex Shank Reamer Material: HSS6542, M2 high speed steel Handle Diameter: Approx. 31.8mm / 1.25in Maximum Cutter Diameter: 13/16in Package List:1 x Hex Shank Reamer1 x Storage Box Package List 1 x Hex Shank Reamer 1 x Storage Box