TIMCO Diamond GP Core Bit – 117 x 150mm. Universal dry core for drilling large, clean holes in most building materials including semi-engineering bricks, clay products and limestone. Dry Diamond Core Bit. Armoured fitment body for strength & durability. Rifled body for excellent dust extraction. Precision manufactured for low noise and vibration. Long life high quality diamond. Fast cutting 10mm turbo segments. Easy core removal slots. TIMCO products are designed for trade professionals who demand reliability, consistency and performance on every job. This product offers dependable quality, clear specification and ease of use, making it ideal for both site work and maintenance tasks.