Drill bit is made from high-speed steel, known for its durability and ability to withstand high temperatures generated during drilling., With a 5/16" diameter, the drill bit is designed to create precise holes of this specific size, providing versatility for various drilling applications., Jobber Drill Bit HSS 5/16" is suitable for drilling into different materials, including wood, metal, plastic, and more, making it suitable for various DIY projects and professional applications.