Quickly forms new threads, re-forms burred threads, and cleans out plaster obstructions. Each tap size rethreads to next larger size if threads are stripped. Two high carbon steel taps are secured in reversible holder. Holder fits into large, clear plastic handle. Six clearly marked tap sizes: 6-32, 8-32, 10-32, 10-24, 12-24, and 1/4-20. Overall length: 7 5/8″.