Drill America'S Dwt Series Dwth112-14Npt 1/4" Npt 1-1/2" Od High Speed Steel Drill America DWT Series Qualtech High-Speed Steel round adjustable die is desired for improved wear life. Round Dies are chamfered on both faces. One side has a 2 to 3 thread chamfer for threading, the other side has a 1 to 1-1/2 thread chamfer for threading close to a shoulder. Adjustment is obtained by a fine pitch screw which forces the sides of the die apart, or allows them to spring together. The slot is beveled so that when the die is use in a machine holder the adjusting screw can be removed and adjustment made by the adjusting screws in the holder. High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance Round die is chamfered on both faces Adjustment is obtained by a fine pitch screw which forces the sides of the die apart, or allows them to spring together Country of origin: China