For drilling holes in iron, brass, plastic, aluminum, etc., cutting female threads, and forming female threads.
A set of 4 sizes of medium taps, pilot hole drills, and tap holders. Drill sizes (mm): 2.5, 3.3, 4.2, 5.1
Tap size: M3xP0.5, M4xP0.7, M5xP0.8, M6xP1.0
Tap holder usage range: M3-M6
