Features 1、Carbon steel material has strong stability, is not easy to rust, and has a long service life. 2、High accuracy for fine mechanical process of good quality. 3、The tool kit is made of high quality carbon steel with excellent hardness and toughness to extend its service life. 4、This product is the main accessory for boring and CNC milling machines, such as coordinate boring machine, horizontal boring machine and ordinary boring machine. 5、Used for machining inner hole surface, boring, boring outer ring, boring end face, boring ladder hole, boring end face, cutting hole and outer ring groove, etc. Specification Features: Carbon steel material has strong stability, is not easy to rust, and has a long service life. High accuracy for fine mechanical process of good quality. The model is universal, does not pick the model. The tool kit is made of high quality carbon steel with excellent hardness and toughness to extend its service life. This product is the main accessory for boring and CNC milling machines, such as coordinate boring machine, horizontal boring machine and ordinary boring machine. Used for machining inner hole surface, boring, boring outer ring, boring end face, boring ladder hole, boring end face, cutting hole and outer ring groove, etc. Specification: Material:Carbon Steel Boring Head: F1-12mm Tail Thread:1-1/2-18UNF MT-3 Shank Tail Thread:M12 Package List: 1 x F1 Boring Head 9 x Boring Blade 3 x Hex Wrench Package List