General description The IRWIN® HSS TCT Tip Drill Bit is a high-quality tool designed for precision drilling in hardened materials. It features a durable C2 carbide tip capable of drilling materials up to 50 Rockwell C hardness, making it suitable for use with stationary drilling machines on steel, cast iron, bronze alloys, and manganese alloyed steel. Technical specifications Diameter: 12.0mm Total length: 151mm Working length: 101mm Body material: Chrome Vanadium Steel, hardened to 56 Rockwell C Tip type: C2 Carbide Tip Maximum hardness capacity: 50 Rockwell C Compatibility and accessories Designed for use with stationary drill presses and drilling machines Installation Insert the drill bit into the drill chuck ensuring it is securely tightened Use appropriate safety gear and follow machine safety instructions during installation and operation Usage Use with suitable drilling machines for precise drilling in hardened steel and other tough materials Apply coolant, such as a 3-6%