To maintain good durability and unmatched performance. Accessories steel is good, long life, reducing the user cost of the tool. High grip strength, impact resistance and strong, clear speed advantage in cutting off a large margin and processing. Large applications, exquisite workmanship, can be used in harsh processing. Practical and a variety of processing environments, even in very dirty environments such as cast iron also has good features. To maintain good durability and unmatched performance. Accessories steel is good, long life, reducing the user cost of the tool. High grip strength, impact resistance and strong, clear speed advantage in cutting off a large margin and processing. Large applications, exquisite workmanship, can be used in harsh processing. Practical and a variety of processing environments, even in very dirty environments such as cast iron also has good features. To maintain good durability and unmatched performance. Accessories steel is good, long life, reducing the user cost of the tool. High grip strength, impact resistance and strong, clear speed advantage in cutting off a large margin and processing. Large applications, exquisite workmanship, can be used in harsh processing. Practical and a variety of processing environments, even in very dirty environments such as cast iron also has good features.