Metabo HM Core Drill 90x55 mm Weldon Shank 32 mm. This Metabo HM core drill is ideal for professional applications. With a diameter of 90x55 mm and a Weldon shank of 32 mm, it offers high performance and precision. The core drill can be used for various materials, including high-alloy steels. It is perfect for drilling holes with a diameter of 14 to 60 mm using the 19 mm Weldon shank. For larger holes starting from a diameter of 70 mm, the core drill with the 32 mm Weldon shank is recommended. To achieve the best results, the core drill should always be used in combination with a suitable centering pin. This ensures precise alignment and prevents slipping during the drilling process. Included accessories: centering pin.