Review on Efficient Performance: Champion DT22HEX 1 2 13 Combination Drill Unleashing Precision by Eric Williamson

When drilling something like a hollow pipe, part of the drill can fall off, causing part of the tap to tear off the thread just cut. In my opinion they break much easier than a regular drill and tap. I think it's because of the small diameter between the tap and the apex driver. I had 6/32, 8/32 and 10/32. Only 10/32 is not broken yet. About $10 each, not a good price for me.