The Leitz 037221 Hinge Boring Bit is a high-quality tool designed specifically for hinge boring applications. With a diameter of 15mm and a cutting depth of 6mm, this bit is suitable for creating precise and clean holes in various materials. The tungsten carbide construction ensures durability and long-lasting performance, making it ideal for professional woodworking and metalworking projects. The Leitz brand is known for its reliability and precision, making this hinge boring bit a valuable addition to any workshop or tool collection.