The Alpen 19pc HSS Sprint Master Drill Set is engineered for excellence, combining toughness and precision to deliver top-tier performance. Ideal for drilling alloyed, carbon, and plain steel, these HSS twist drills are perfect for hand-held operations and ensure rapid, reliable results. Key Features: Sizes Included: 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm Material: High-speed steel (HSS) for enhanced toughness and precision Performance: Optimized drill geometry and special ALPEN tip shape reduce drilling time by up to one-third Durability: Increased service life by a factor of three due to high-quality HSS steel and advanced heat treatment Break Resistance: Designed to be break-resistant with high elasticity and toughness Usage: Ideal for hand-held operations with superior speed and long-term efficiency# Brand : Alpen