Centering tip. Active center point for cutting in concrete. Durable carbide with fine grain size. Long life and excellent resistance. 2-cutter design with AWB brazing and hardening. Diameter-optimized brazing and hardening technology enhances drill robustness and reduces vibration during drilling. Diamond-ground cutting edges allow for multi-purpose drilling. 4-spiral Dura design features a reinforced core diameter for greater resistance and stability when drilling in concrete. Suitable for a variety of interior materials including concrete, masonry, brick, eternit, lightweight materials, multi-layer materials, ceramics, tiles, wood, plastic, metal sheets, and aluminum. Delivers optimal results in rotary and percussive drilling. Drill bit color: blue, bright ground. Pack of 1. Dimensions: 4 x 80 x 130 mm, diameter 3.8 mm.