These Carbide Twist Drill Sets from Bosch are suitable for drilling in stone, concrete and masonry. * Type: Concrete twist drill bit set * Drill hole diameter: 5/6/8mm * Material (drill bit): Tungsten carbide * Material suitability: Concrete/ masonry/ stone * Tool holder: Cylinder shank * Manufacturer's part no.: 2609255416 https://elecena.pl/product/27270122/bosch-2609255416-carbide-twist-drill-concrete-set-straight-shank-5-to-8mm-3-pcs 2024-11-14 https://elecena.pl/product/27270122/bosch-2609255416-carbide-twist-drill-concrete-set-straight-shank-5-to-8mm-3-pcs 2026-05-10