HSK63/100-LBA/BST for Roughing Boring The Boring Head can process holes of all shapes and sizes, including straight, cone, curved and more. Boring Head is divided into rough boring and fine boring two kinds, rough boring refers to the use of a larger boring tool for processing, processing speed is faster, but the processing accuracy is low; Fine boring refers to the processing with a smaller boring tool, the processing speed is slower, but the processing accuracy is higher. HSK63/100-LBA/BST for Roughing Boring is a type of tool holder commonly used in CNC machining. It is designed to securely hold cutting tools in place during machining operations, ensuring accuracy and stability. Commonly used in various machining applications, including milling, drilling, and tapping. It is compatible with a wide range of cutting tools, such as end mills, drills, and reamers.