The SDS max-9 hollow drill crown is ideal for cutting deep holes when installing switch boxes. It is made of highly durable carbide with a fine grain, ensuring optimal wear resistance during drilling. Additionally, the number of asymmetrical carbide teeth on the drill is tailored to its diameter, making it the right choice for drilling with fast progress and low noise operation. Its U-shaped two-spiral shaft is well-suited for transporting drill cuttings and breakthrough drilling, while the one-piece design ensures optimal power transfer from the machine. The drill is intended for use in concrete, masonry, and aerated concrete and is compatible with SDS max drills. The product is also available in a two-part version. Diameter: 45 mm, drill crown depth: 80 mm, working length: 160 mm, number of cutting edges: 6.