Lathe Tool Rest Assembly, Professional AT300 Mini Lathe Tool Post Assembly Tool Portable Change Lathe Assembly Quick Change Tool Post Holder Work Tool Accessories Assembly Metal Work Tool. 1? Build to Last: It is made of hard cast iron and is high-frequency quenched and tempered to provide strong rigidity, high hardness, wear-resistant performance, and long service life. 2? Good Auxiliary Tool: This product is compact, which will not affect the speed and process of tool replacement during use, which can improve processing speed. 3? Improving Efficiency: The tool changing speed of this product is only 10 seconds, which can improve the efficiency of processing and turning. 4? High Accuracy: The tool table and rotating disc can rotate within 360°, which not only makes machining more convenient but also improves accuracy. 5? High Compatibility: This product can install tools with most handle sizes of 0.47 0.47in and 0.55 0.55in.