HHIP 3" 3-Jaw Self-Centering Lathe Chuck With 5" Back Plate These 3-jaw self-centering scroll chucks with back plates are commonly used in lathe and machining applications to securely hold round or hexagonal workpieces. They are suitable for use with rotary tables. All three jaws move simultaneously via a scroll plate, ensuring quick and accurate centering of the workpiece. Designed for firm gripping with even force distribution, minimizing workpiece slippage. Made from high-grade tool steel, with hardened and precision-ground jaws for durability and accuracy. Includes two sets of jaws (ID and OD) and a chuck wrench. Comes with a pre-mounted back plate, making it easier to install on various lathe spindles. Some require machining to fit specific mounts. Compatible with multiple spindle mounts. Manufactured to tight tolerances (e.g., ?0.05mm runout) for accurate machining.