Feature 1THREAD CONNECTION: This drill chuck arbor adopts thread connection, the thread specification is 3/8in, 24mm length, with R8 shank, easy to connect and install. 2PREMIUM MATERIAL: Made of excellent manganese steel, the drill chuck arbor has strong resistance to oxidation, high hardness, and long service life. 3EASY INSTALLATION: The drill chuck connecting tool allows for quick and easy installation and removal, saving you time when switching applications. 4WIDE RANGE OF APPLICATIONS: The threaded drill chuck arbor is widely used in tapping machines, drilling machines, milling machines, boring machines, pneumatic tools, and more. 5PORTABLE DESIGN: The drill chuck arbor adapter is easy to carry with you, making it convenient for use anytime, anywhere.Item Type: Drill Chuck ArborMaterial: Manganese SteelModel: R8 3/8 24Thread Specification: 3/8in, length: Approx. 24mm/0.94inConnecting Shank: R8Connection Method: Screw .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Drill Chuck Arbor