KFFKFF 3-Jaw Lathe Chuck, 8'', Self-Aligning Lathe Chuck, 0.16-8 in/4-200 mm Grip Range with T-key Securing Bolts Hex Wrench, for Lathe 3D Printer Fabrication Center Milling Drilling Machine

Constructed from HT300 material for superior hardness and rust resistance High-precision machining process ensures structural stability and accuracy Dual-use jaw can be used for both internal and external clamping Simple and compact structure for easy operation Highly adaptable for various lathes and machining processes