Flat wood drill bits with a hexagonal shank from the long series measuring 400 mm are tools designed for drilling and machining operations on wooden materials. The hexagonal shank configuration ensures a stable and secure grip in the chuck, reducing the risk of slippage during use. The 400 mm length allows for reaching greater depths compared to standard drill bits, facilitating work on thick pieces or in hard-to-reach areas. This type of drill bit is suitable for professionals who require precision and reliability in wood cutting, maintaining a geometry suitable for effective material removal.