1. High-quality material selection: bearings, double waterproof2. Grinding process: full bright polishing appearance process3. Reasonable design: double cone extension design at the top of the center axis4. Hardness of tip shaft: up to 60hrC5. Tip shaft insert alloy: hardness up to 82HRC6. Axis top: double cone lengthened design7. Built-in dust-proof oil seal: prolong service lifeApplicable machine tools: latheColour:SilverMaterial:steeltype:MT2Package Contents:1 x swing centerOnly 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.