Features Function: This tool shaft is used for lathes of tailless lathes. Compatible with all drill chucks with 6JT drilling and any machine with 3MT spindle. The long end (with handle) is 3MT and the short end is 6JT. Fine Polishing: Each product wears several times after processing, and the best finish makes it easier to use. Easy to store and maintain, very useful tool. High Precision: Precision grinding and quenching, high processing precision. The drill sleeve has a longer life, is impact resistant, and has a high internal and external finish. Durable Material: Heat-treated steel structure with high hardness and durability. Hard, not easy to break, bring you a better experience, strong shock resistance. Service: We focus on the shopping experience of our customers and hope you have a pleasant shopping experience. If you have any questions, you can send us an email, and we will reply to your message as soon as possible. Specification: Item Type: Drill Chuck Arbor Material: 40Cr Length: 139mm / 5.47in Precision: 0.01mm Application: Lathe Item Weight: Approx 333g Package Weight: Approx 346g Package List: 1 x Drill Chuck Arbor Package List 1 x Drill Chuck Arbor