Bosch 2608900609 CYL-9 Multi Construction Drill Bit 5.5 x 50 x 85mm The Bosch 2608900609 has a 5.5mm diameter with a working length of 50mm. The drill bit is ideal for drilling practically all materials including concrete, brick, wood, plastic and more. The 4-flute dura design with reinforced core section delivers better wear resistance and stability when drilling in soft concrete and the centring tip provides a steady drilling start and good guidance throughout. These bits are extremely long lasting and durable for fast drilling performance. Features: Centring tip provides a steady drilling start and good guidance universally Diameter-optimised AWB brazing and hardening technology increases robustness and reduces vibration during use 4-flute dura design with a reinforced core section delivers better wear resistance and stability when drilling in soft concrete Suitable for drilling soft concrete, masonry, brick, cement asbestos, light building materials, multilayer materials, ceramics and tiles, wood, plastic, sheet metals and aluminium Made from fine-grade highly durable carbide, this bit has extra-long life and offers the best wear resistance Specification: Diameter: 5.5mm Working length: 50mm Total length: 85mm