"I only needed one of these bits, but the cost of the whole set was little more than buying the piece on it's own.
i was a little concerned that in order to make teh price point, there would be a compromise in the quality of materials or manufacturing, but I am happy to say that hving used it I am plesantly surprised.
I needed to drill a very long hole through an outside wall in an old house, I was concerned that this might be too heavy a job.
The wall I was trying to get through was about 500mm thick(!) and was made of rough rubble bound together with lime, and a final finished stone on teh outside wall - the big drill in this set allowed me to put a pilot hole through most of the way of the rubbish.
A visual inspction revealed that far from being a 'use once and toss out' job, other than beng a bit dusty, it's virtually unmarked and well up to taking on any number of similar jobs."
"This set of drill bits has a good range of sizes for sds+ drills. I have another set (5.5, 6, 7 & 8) inside my drill case but for larger holes (and chiseling) I use this set. I have had no problems with it and it is very good value. You could spend more than this on one chisel bit."