We're working with a variety of tradesmen to solve endless fastening challenges Irwin® Hanson® Taps and Dies are the answer. Whether creating new tools from raw steel or repairing damaged and worn threads, achieving a precise fit is essential. Irwin® Industrial Tools® sets the standard for delivering quality every step of the way in your threading applications. Irwin® Hanson® Combination Tap/Hex Die and Drill Bit Deluxe Set, Measurement System: Imperial/Metric, 117 Piece, 4-40 to 1/2-20 Tap, 4-40 to 1/2-20 Die Thread, #43 to 16 Drill, BSP/NPT/UNC/UNF Thread Standard, Hexagon Fixed Die Shape, Spiral Flute Tap, Plug/Tapered Tap Chamfer, High Carbon Steel Tap, High Carbon Steel Die, High Carbon Steel Drill, Plain Tap, Bright Die, Bright Drill, Plastic Case Package, Adjustable Die: Yes