1.Details of the Tool: 4 models of broaches, are B1-4, B1-5, C1-6, C1-8; 13 catheters are 12B, 14B, 15B, 16B, 18C, 19C, 20C, 22C, 24C, 25C, 26C, 28C, 30C; 5 separators, 2 of which level B and 3 of C. 2.HSS Steel- Made of HSS steel, high speed steel is a tool steel with high hardness, high wear resistance and high heat resistance. Sized and proportioned to afford a good cutting range and ample rigidity. 3.Applications- Specialty tools designed for cutting keyways in machined holes. It is widely used for punching, machining of machine acc essories, perfect parts for stamping machine. suitable for bordering and groove processing in the project. 4.Professional Tool- This tool set has a sharp cut and high work efficiency. It will help you a lot in your mechanical work. Typically used manually with an arbor press to produce the keyways. 5.Feature- All broach sets are furnished in handsome varnished boxes, and come complete with precision broaches, slotted bushings, and necessary shims. Widely applied to machine manufacturing and parts production etc.Suitable for bordering and groove processing in the project.With convenient wooden box, easy to carry and store.High strength, excellent wear resistance and long cutting life, Manufacturer: ZXZZAS