"Used the 117mm bit twice now and worked well both times with no problems. Comes in a neat case with all the accessories. Don't use it alot, but at the price it is good value, and saves on the cost and time associated with hiring one. How it will stand the test of time remains to be seen. But to date i am more than pleased with its performance."
"I haven't used the larger of the cores yet but the performance of the other two is fantastic. I used the 38mm one to cut holes through two layers of brickwork for low and return pipes to a boiler and it took around two minutes for each hole. The 52mm core was used to cut a hole for waste pipe from a kitchen sink and it took less than two minutes. I did have to fit the extension bar that comes with the set though as the standard attachment is only long enough for a single skin wall :) Both cores were used with a Titan SDS battery drill set on rotary (not hammer)."
"Used the 38mm core drill to bore 3 holes through a 15 inch thick concrete slab, still going strong on the third hole. Tip, the drill will only do about 5 inches with the core in place so every few inches I broke the core and lifted it out of the hole with a vacuum cleaner."
"Picked this up on a half price deal as it wasnt much more than hiring one for a one off job. Used the 117mm, havent used the others yet, but made a very tidy hole through a cavity brick wall, (and used extention) without too much sweating and swearing."
"Great Value core dril set geared up for typical plumbing requirements. All the bits you need in a nice case. I've used the 117mm core drill for about two years and done twenty holes and it still cuts well"
"Thought I'd got a bargain when bought on half price offer but not worth it even at this price. The 50 mm core broke up on the second hole drilled through normal brick.
Screwfix refunded as usual but for the first time ever weren't able to replace so I had to buy the larger Laser set at £160. These cores look better quality but still run off centre from the drill bit just like this set.
If you need to use it once buy this set if its on offer, otherwise go for something else."
"Just wanted a 117mm core bit so decided to buy the kit which was a real bargain. However just try dilling a 117 mm hole with this bit through ceramic tile, plasterboard, brick and render depth approx 300m. Using this one took over 2hrs!!!! Surprised drill machine did not burn out. This erbauer range of diamond core drills certainly begs the question are there any industrial diamonds on it. Avoid this product and go for a Norton professional or the laser edge welded product"