Stier diamond drill bit M14 for use with angle grinders. Features: diameter 12 mm, premium quality diamond tile drill, integrated cooling wax. Advantage: drilling without a pilot hole. Applications: granite slabs, stone slabs, porcelain stoneware, ceramic tiles. Stier products are developed by professionals from crafts and industry, combining maximum performance and ergonomics. Powerful, durable, long-lasting. Thousands of customers trust the best value for money. Experience the Stier product range for yourself.