- Includes one BT30 bearing lock block with locking device, one BT40 bearing lock block with locking device, and one BT50 bearing lock block with locking device. Suitable for engraving CNC tool holders. - All aluminum tool holders are durable and lightweight, offering long service life and easier handling in CNC applications. - Specifically designed for BT40 (NT40) CNC tool holders, ensuring a precise and secure fit. - The lock block and locking device provide reliable locking for the tool holders, enhancing stability during operation. - Ideal for CNC machining, providing a comprehensive solution for tool holding needs across different BT specifications. Use scenarios - Engraving operations that require stable tool holding for BT30, BT40, or BT50 tooling to maintain cut accuracy. - Precision milling using BT40 (NT40) tool holders where secure locking reduces runout and improves surface finish. - Shops with multiple BT specifications needing interchangeable lock blocks and locking devices to quickly switch between BT30, BT40, and BT50 tooling without compromising rigidity.