TAP AND DIE SET - This 1/2-inch device is part of our selection of wood threading tools that ranges from 1/2" to 1-1/2" in size Two-handled threadbox cuts male threads, while matching tap die cuts internal female threads Two-handled threadbox cuts male threads, while matching tap die cuts internal female threads Bottoming tap finishes off the female section Made of long-lasting plastic handles with steel cutters and an internal aluminum wear fittings.