The Bergen US PRO 25pc Metric HSS Drill Bits Set is designed for precision and durability. These high-speed steel (HSS) drill bits are precision ground and heat treated, ensuring strength and long-lasting performance for a wide range of applications. Key Features: Material: High-speed steel (HSS) 4241 Design: 135-degree split point for accurate starting and reduced walking Ground: Half ground for enhanced cutting performance Packaging: Supplied in a plastic storage case for easy organization Standard: DIN 338 Brand: US PRO Sizes Included: 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, 10.5mm, 11mm, 11.5mm, 12mm, 12.5mm, 13mm