A. The tool holder changer is made of PVC material that offers resistance to wear, cold, high temperature, acid and alkali. It is professionally manufactured and well - matched with the tool holder, ensuring durability. B. CNC tools are designed for various types of ISO30 tool holders and automatic tool change systems. They have excellent workmanship and can be a good replacement for old or damaged ones. C. The tool holder fixture cradle jaw set has a wide range of uses and is suitable for many sizes of CNC milling cutters with automatic tool changers. There's no need to overly worry about size incompatibility. D. It is a professionally manufactured industrial automatic tool changer for engraving machine tools that matches the tool rest well. It is suitable for drilling, milling and engraving in CNC tool holder applications. E. The tool holder fixture is commonly used as a fixed handle of the engraving machine. It has high precision, stable performance, anti - aging properties and acid - alkali resistance. It is easy to install and disassemble, and can serve as a good automatic tool changer.