The Milwaukee Tool 38-pc Metric Tap & Die PACKOUT Set w/ HEX-LOK 2-in-1 Handle, No. 49-22-5603, includes precision machined threading accessories and features 17 straight-flute taps and 17 1" hex dies with long-lasting laser-etched sizing. Includes a protective black oxide coating for corrosion resistance. The Hex-LOK handle combines the benefit of internal and external threading within one handle by its compatibility with both 1" hex dies and the Milwaukee tap collet. The handle's ergonomic grip is designed to deliver user comfort, while the all-metal construction allows for tool-free die and tap collet changes. The Plug Taps square shank is compatible with all standard tap handles or tap wrenches and is designed for through-hole threading.