This 17.5 x 191mm black HSS drill bit is a professional high-quality jobber rolled drill bit, perfect for metalworking applications. Made of durable steel, this step drill bit features a strong construction and good quality finish in a sleek black color. Ideal for woodworking supplies and CNC machining, this drill bit is designed to provide accurate and efficient drilling results. Perfect for professionals in various industrial settings, this drill bit ensures a reliable performance and long-lasting durability.