Flat wood drill bits with a hexagonal shank from the long series measuring 400 mm are designed for drilling operations on wooden materials. The extended length allows for reaching greater depths compared to standard versions, ensuring precision and stability during use. The hexagonal shank provides a secure grip and effective force transmission, minimising the risk of slipping in the chuck tool. These drill bits are suitable for various professional applications in the woodworking sector, maintaining consistent hole quality even under demanding working conditions.