Features: brand new and high quality. The compact chuck is small volume, easy to be used. It has a high centering precision as well as a large clamping range. 125mm diameter, the chuck is made for lathe machine tools. 3-jaw design, self-centering, widely used for woodworking lathe. Specification: Model: K11-125 Material: Iron (chuck body), steel (jaws) Chuck Type: 3-jaw chuck Chuck Structure: Big through-hole chuck Power Type: Manual Chuck Diameter: 125mm / 4.9in Chuck Hole Diameter: 30mm / 1.2in Internal Clamping Range: 2.5~40mm / 0.1~1.6in External Clamping Range: 38~110mm / 1.5~4.3in Supporting Range: 38~125mm / 1.5~4.9in Centering Precision: 0.07mm Suitable Machine Tool: Lathe Speed: 3800r/min Max. Input Moment of Force: 100 Weight: 5095g / 179.7oz(approx.) Package list: 1 * Chuck Set .