The Alpen Profi Multicut Drills with 1/4" hex shank are engineered for extreme versatility and precision in various materials. Ideal for precision rotary drilling in tiles, natural stone, metal, wood, and plastics, these drills cater to a wide range of applications. Brand : Alpen Material : Tungsten Carbide Size : 5.5mm x 100mm Ideal for Locksmith Industry : Perfect for drilling into hard plates and faceplates on mortice locks and cylinders. Carbide Tip : Extra sharp cutting edges make them well-suited for metal. Patented 4-Step Profile : Ensures fast drill dust feed when drilling into masonry and concrete. 1/4” Hex Shank : Suitable for use in impact drivers.