1、CARBON STEEL MATERIAL: Made of premium carbon steel material, with surface quenching and blackening treatment, strong oxidation resistance, strong, and long service life. 2、TIME SAVING: The drill chuck arbor allows for quick and easy installation and disassembly, saving you time when switching between applications. 3、WIDELY USED: This accuracy drill chuck arbor is widely used in tapping machines, drilling machines, milling machines, boring machines, pneumatic tools, etc. 4、FINE WORKMANSHIP: Well crafted in fine and smoothly appearance, this drill chuck arbor ensures a stable and smoothly operation, choose for more efficient work! 5、EASY INSTALLATION: Comes with a small and compact size, this drill chuck arbor can be easily installed and is an ideal replacement for the old and damaged parts.