1. High-quality material selection: bearings, double waterproof 2. Grinding process: full bright polishing appearance process 3. Reasonable design: double cone extension design at the top of the center axis 4. Hardness of tip shaft: up to 60hrC 5. Tip shaft insert alloy: hardness up to 82HRC 6. Axis top: double cone lengthened design 7. Built-in dust-proof oil seal: prolong service life Applicable machine tools: lathe Colour:Silver Material:steel type:MT1 Package Contents: 1 x swing center Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.