The UNIBIT 12 3/8 is a high-quality step drill bit designed for precision drilling in various materials. Manufactured by Field Tool Supply Co, this bit features a unique design that allows for drilling holes ranging from 3/8 inch to larger sizes without the need for multiple bits. Constructed from durable high-speed steel, it ensures longevity and resistance to wear. The bit's dimensions are optimized for versatility, making it suitable for both professional and DIY applications. Ideal for metal, wood, and plastic, it meets industry standards for performance and safety.