Tap Material: High-Speed Steel 6542 (M2), Cutting Diameter: 1-1/8 Inch, TPI: 7 Teeth per Inch, Cutting Direction: Right Hand, Accuracy Class: 2B. Die Material: Alloy Tool Steel, Cutting Diameter: 1-1/8 Inch, TPI: 7 Teeth per Inch, Cutting Direction: Right Hand, Accuracy Class: 2A. Technology: Straight fluted design, fast chip removal, and no blocking make your threads machining faster and easier. Applications: Widely used in cast iron, copper, brass, abrasive steel, A3 steel, and other metal materials to process threads. Package Include: 1 set 1-1/8-7 UNC Tap&Die.