With its precise measurements and ergonomic , this- tool set ensures efficiency and comfort during use. The 45# steel lathe tool holder wrench/key-/inside square wrench is the tool for any - durability and versatility. 45# steel ( carbon steel) and treated with a black finish, this- tool set is and withstand heavy use. From repairing engines to assembling furniture, this- tool set is ideal- for wide - of applications and can be used in both industrial and home settings. Whether you're a professional or a enthusiasts, this- lathe tool holder wrench set is designed to meet your needs and your expectation., Manufacturer: Watreketal