RUKO Drill Bits & Parts Metal twist drill bit 616440 - RUKO 214110, Manufactured by RUKO, this 11.0 mm metal twist drill bit features a total length of 142.0 mm and adheres to DIN 338 standards, with a cylinder shank for precise drilling. Ideal for machining and sheet metal applications, it is designed for efficient performance in steel and other metals. The bit ensures durability and accuracy in professional and industrial settings. RUKO 214110 HSS-G Metal Twist Drill Bit 11mm 142mm Precise Concentricity