10" 4-Jaw Lathe Chuck, 5MT shank rotating chuck plate, one set of solid steel jaws, and chuck wrench  are also included in the package.

About the Chuck Revolving Plate:

• The chuck plate is designed for supporting work pieces during process to be fitted for standard 10" 4-jaw self centering lathe chuck.
• Triple ball bearing design.
• The main body and taper shank are made of  high quality carbon steel and hardened for high performance and stability.
• Morse taper : 5 MT.
• Accuracy: 0.0004".
• RPM: 2,000.

10" 4 Jaw Independent Lathe Chuck K72-250

• Chuck Outside Dia. : 10" (250mm).
• Chuck Body Thickness: 3.1496" (80mm).
• Center Thru Hole Dia.: 3.9370" (100mm).
• Bolt Circle Dia.: 5.1181" (130mm).
• Mounting Thread: 4-M12.
• Max RPM: 1,800.
• Internal Jaw Clamping Range: 0.5906" (15mm) - 5.1181" (130mm).
• External Jaw Clamping Range: 3.1496" (80mm) - 9.8425" (250mm).
• Accuracy: 0.002"(tested vertical<0.002"; horizontal<0.002")..
• Front Mounting.
• Four mounting screws and one chuck key are included in the package.