All Most parts are processed by CNC and can be used stably Grizzly Industrial H8049-6 4-Jaw Wood Chuck - 1 x 8 TPI - Power Lathe... Compatible with lathe that use 1'' X 8 TPI thread, and 3/4 X 16 TPI using the adapter Buy FJL FORCE Lathe Chuck Sets 4 Inch, Wood Lathe Chuck 5 Interchangeable 4-Jaw Wood Turning Lathe Nickel Plated Chuck 1 X8tpi Thread Nickel Plated Chuck Set 1x8 TPI WEN LA4374 3.75-Inch 4-Jaw Self-Centering Lathe Chuck Set With 1-Inch X 8TPI Thread Woodturning Chuck With Adapter For 3/4x16 TPI This set of chuck has two jaws, round jaws and big round jaws 4" Wood Lathe Chuck Set 1" x 8 tpi Self Centering 4 Jaw Wood Turning Chuck Set. Brand New · Unbranded. C $246.24. or Best Offer This is its advantage over rusty chuck and can be used for a long time Each part will not rust.