These economical twist drill bit sets are made from high-speed steel (HSS) with a bright finish. Available in either 13 pieces or 25 pieces, they offer a variety of diameters to suit a wide range of standard drilling needs. The 118-degree point angle ensures accurate drilling and reduces wandering, delivering clean and smooth cuts. With moderate heat resistance and durability, these sets are ideal for DIY and light industrial applications. The bright finish minimizes friction during drilling, making them a cost-effective choice for occasional use. While they perform well for standard drilling tasks, periodic sharpening is required for optimal performance.