Feature:1. STANDARD AND ACCURATE: The drill chuck arbor features standard MT1 shank and accurate 5/8in 16 thread, easy to install and use.2. STURDY MATERIAL: Made of premium manganese steel, the drill chuck arbor has strong anti oxidation, high hardness and long service life.3. QUICK INSTALLATION: The drill chuck arbor adapter allows for quick and easy installation and disassembly, saving you time when switching between applications.4. MULTI PURPOSE: This high precise drill chuck arbor can be widely used in tapping, drilling, milling, boring machines, pneumatic tools, etc.5. STORAGE BOX: The threaded drill chuck arbor comes with a convenient storage box for storing and easy carrying.Specification:Item Type: Drill Chuck ArborMaterial: Manganese SteelModel: MT1 5/8 16Connecting Shank: MT1Connection Method: Screw.Package List:1 x Drill Chuck Arbor1 x Storage Box