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