construction: Boring head and bars are made from hardened steel for durability, wear resistance, and precise boring performance in metalworking. Wide compatibility: MT2 shank for versatile mounting in milling machine spindles; M10 threads fit boring bars for inner diameter operations. Suitable for CNC or manual mills. Precision boring capabilities: The system can bore straight holes, counterbores, chamfers, face bores, turn the external diameter, and cut grooves, enabling a range of internal machining tasks. Durable and wearresistant: Finegrain steel and heattreated construction resist wear during repetitive machining in industrial or hobbyist shops. Practical applications: Bore precise internal holes on steel or aluminum workpieces in CNC or manual milling. Create counterbores and chamfers for bearing seats or flushfastener assemblies. Face bore and groovecut internal diameters to true up housings or adapt components.