I too fell for these so-called 'wonder' drill bits at Northern Home Show earlier this year. The drill bits that drill anything and everything with ease and safety and whilst they may not be indestructible, if they do break, they'll be replaced for free (+ £4.95 P+P). So when I came to use them, I didn't even have a correct set - no 6mm, no 8mm (the 2 most common used sizes) but I had an extra 3mm and extra 12mm! Short sharp emails told me to send back the extra bits and replacement 6&8mm bits would be sent out. Replacements finally arrived, and the 6mm bit was rusty having clearly been used. Does this take the p**s or what? Emailed the rude Director again telling him I intended to send the whole set back and wanted a refund as his customer service is non-existent, his products do not live up to expectations and for me to have to go to all the effort to put right a cock-up made in his packaging department, and then be sent used bits, is downright unacceptable. His curt response said if I was unhappy (understatement) I could return them and he would refund me but not a penny more than I paid. So I've spent the best part of £10 altogether in postage sending him stuff back, and been treated like s**t for which I will not be recompensed. The guy is clearly an a*hole. Drill all drill bits - b****cks - a good quality bit specific for the job (wood, masonry, etc) with an appropriate drill is the best way of getting the job done. I won't be falling for these gimmicks again.