1/2"-20 Left Hand Thread Tap - High Precision Carbon Steel Tap for Metalworking, DIY Projects, and Automotive Repairs

1/2" - 20 unified left hand thread tap. High speed steel tap ground thread to cut thread in one go from zero to full thread.

1/2" - 20 unified left hand thread tap.

20 TPI (Thread Per Inch).

High speed steel tap ground thread to cut thread in one go from zero to full thread.