Features Long-lasting working capacity--- Designed for durability, these high-speed steel (HSS) twist drill bits offer long-lasting performance, ensuring you can tackle any drilling project with confidence. Advanced 118 degree split point angle--- The advanced split point design allows for precise and accurate drilling, reducing the risk of slipping or wandering during operation. Achieve clean and professional results every time. Short chisel edge for reduced drilling resistance--- With its short chisel edge, these drill bits minimize drilling resistance, allowing for faster and more efficient drilling. Get the job done quickly and effortlessly. Heavy-duty metal storage case--- Each set of drill bits comes in a heavy-duty metal storage case, providing convenient organization and protection. Keep your drill bits secure and easily accessible. Versatile drilling capabilities--- These HSS twist drill bits are suitable for drilling in cast iron and alloyed materials, making them ideal for various applications. Expand your drilling possibilities with this versatile set. Features:- Drill Bit Material: HSS- Long - lasting working capacity - Advanced 118 degree split point angle - Short chisel edge for reduced drilling resistance - Bits come in a heavy duty metal storage case - Suitable for drilling in cast iron, and alloyed material. Sizes: 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 / 10.5mm / 11mm / 11.5mm / 12mm / 12.5 mm / 13mm  Package Includes: 1 x 25 Piece HSS Twist Drill Bit Set Package List