Irwin Hanson High Carbon Steel Plug Tap 3m *Sub Brand: Hanson *Material: High Carbon Steel *Diameter: 3mm-0.50 *Metric or SAE: Metric *Product Type: Plug Tap *Number in Package: 1 pc. *Packaging Type: Carded *Usage: Auto Repair and Machinery *Straight flutes are ground to provide rapid chip removal for efficient threading *Designed for hand threading work in a variety of materials *Taps produce a class 2B thread *Use with #39 drill bit