High-quality HSS cobalt steel and titanium coating for exceptional durability and sharpness, reducing friction for smooth operation. Versatile set with 5 common sizes suitable for drilling steel, aluminum, wood, plastic, and more, saving time and effort. Compatible with 1/4, 3/8, and 1/2 inch chuck sizes, ensuring versatility and usability with most brands on the market. Well-organized box for easy storage and transportation, with a size-indexed drill bit holder included for convenience. Whether you're a DIY enthusiast or working in general construction or engineering, our drill bit set is a must-have tool for your projects. Description: Introducing our versatile and durable drill bit set, designed to make your drilling tasks easier and more efficient. Made from HSS cobalt alloy high-speed steel with a titanium coating, these drill bits are extremely durable and maintain superior sharpness for years to come. The set includes 5 common sizes, suitable for drilling into steel plates, aluminum plates, wooden boards, plastic plates, and more. The different sizes ensure compatibility with 1/4, 3/8, and 1/2 inch chuck sizes, making it suitable for most brands on the market. Additionally, the well-organized box makes transportation and storage easy and convenient. Whether you're a DIY enthusiast or working in general construction or engineering, our drill bit set is a must-have tool for your projects. Save time and increase efficiency with our high-quality drill bit set. Item Name: Drill Bit Material: High Speed Steel Features: Rustproof, Corrosion Resistant, Long Lasting Size Details: Length: 5.7cm-7.8cm/2.24"-3.07" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 5 x Drill Bits