Specifications:Cutting Diameter: 5/8"Accuracy Class: H8Reaming Shape: CylinderCutting Length: 80mm / 3.15"Overall Length: 155mm / 6.1"Square Shank Size: 11.5mm / 0.45"Flutes Quantity: 6Material: Alloy Tool SteelCoating: UncoatedPackage Content: 1pcs x Hand ReamerDescriptions:1. Material and Coating: Made of Alloy Tool Steel, the hand reamers ream the cylindrical shape. With high hardness and durability, the reamers provide finish cuts. Features just the base substrate without any coatings, suitable for wide ranges of applications.2. Wide Applications: Widely used for and handicraft processing, and bore machining. Suitable for accurate reaming in aluminum, cast iron, copper, plastic, wood, and other soft materials.3. Easy to Use: Hand reamers can be hand operated by use of wrenches.