*KeyFeatures *Outstanding Hardness: Crafted from premium HT300 cast iron, this lathe chuck features jaws with a hardness of ≥53 HRC and a scroll plate hardness of ≥45 HRC. Quench-hardened for enhanced durability, it ensures excellent hardness and rust resistance, ensuring a long-lasting service life *Self-Centering Function: The built-in self-centering feature allows for hassle-free use without repeated calibration. It ensures precise control over clamping accuracy, maintaining the stability and high precision of the lathe chuck for flawless performance *8-Inch 3-Jaw Lathe Chuck: Featuring a 2 1/4 in-8 threaded adapter backing plate, this lathe chuck achieves a faster and more stable connection to your machine. With a 2.56 in (65 mm) inner diameter and 8 in (200 mm) outer diameter, it clamps workpieces ranging from 0.16-7.87 in (4-200 mm), making it versatile for a variety of sizes *Hassle-Free Operation: Featuring a simple, compact design, this lathe chuck balances functionality and reliability. Equipped with a T-shaped tool, installation of our lathe chuck is a breeze. Just follow the correct sequence for a seamless setup *Ideal for Most Lathes: Whether you're working with metal, drilling, or milling, our lathe chuck will enhance your machining efficiency and flexibility. It helps you achieve precise and consistent results every time ******************************************************************************************************* *Specifications Item Model Number: K11 200A（ 2-1/4-8） Product Type: 3-Jaw Lathe Chuck with Backing Plate, Separate Jaws Inner Diameter: 2.56 in / 65 mm Outer Diameter: 8 in / 200 mm Internal Jaw Clamping Range: 0.16-7.87 in / 4-200 mm External Jaw Clamping Range: 2.56-7.87 in / 65-200 mm Main Material: HT300 Net Weight: 35.38 lbs / 16.05 kg Item Dimensions: 7.87 x 4.92 in / φ200 x 125 mm ******************************************************************************************************* *Pakcage Content 1 x Lathe Chuck 1 x T-Wrench