Precise Angle positioning: Equipped with a mechanical hand system with a scale, it achieves precise Angle control and repetitive positioning Intelligent speed regulation system: The variable frequency speed regulator supports one-button start and stepless speed regulation within the range of 0 to 3000RPM Multi-functional working platform: Supports various processes such as flat grinding, Angle polishing, and faceted processing Compact structure design: The integrated body saves working space, and the layout of the operation area is reasonable Suitable for grinding and faceting various materials including natural gemstones, semi-precious stones, s, jade, crystal, and agate.