The 4.20MM CT JOBBER DRILL from Field Tool Supply is a high-performance drill bit designed for precision drilling in various materials. This jobber drill features a 4.20mm diameter, making it ideal for applications requiring accuracy and efficiency. Manufactured in the USA, it is crafted from high-speed steel for enhanced durability and longevity. The drill's design allows for effective chip removal and reduced friction, ensuring smooth operation. Suitable for both industrial and DIY projects, this drill bit meets stringent quality standards, providing reliable performance in a range of drilling tasks.