As what you would expect from a name like Bosch - quality product, does the job well.

Purchased because of Bosch name and good reviews. Poor quality - broke on first use.

I have used many drill-bits before from other makes, but when trying to drill thru' concretes, they used to melt. But these bits are absolutely amazing. they do perfect drills and I have used them so many times, there are still as good as new. the quality is superb. Don't go for cheaper options.

this set of drill bits are excellenthave tried other makes but found that they burn out very quickly especiall on very tough bricks would have no dificulty infact a cost cutting offer to tell anyone to purchase these brills because they are an excellent piece of equipement that will last a long time simply buy borch from argos and save a bundle