1、High Performance: This tool holder is high demand machined, which has high strength and strong shock resistance, can work in high efficiency and good stability. 2、40cr Alloy Steel Made: This shank is fine manufactured by excellent 40cr material, has good hardness, small wear and tear, more sturdy and durable. 3、Coating Technology: The mill shank is coating processed, can resistant to oxidation and high temperature well, greatly prolongs the service life. 4、Easy Storage and Carrying: The tool holder comes with a storage box, which is strong, the tool is not easy to be damaged, convenient to store and carry. 5、Multi Usage: Designed for CNC machining center, engraving machine, can be installed on general milling machines to process some harder and less complex heat treated materials.