RUKO manufactures the 102123E Countersink, featuring a 25.0 mm diameter made from high-speed steel with cobalt (HSSE-Co 5) for enhanced durability. The tool includes a cylinder shank design, ideal for precise countersinking in machining applications. Typically used in machining and metalworking, this single-piece countersink bit facilitates smooth finishes in various materials. https://elecena.pl/product/28443584/ruko-102123e-countersink-25mm-hsse-co-5-sharp-cutting-edges 2025-04-16 https://elecena.pl/product/28443584/ruko-102123e-countersink-25mm-hsse-co-5-sharp-cutting-edges 2026-08-20