"Did quite a bit of research first before going for this set. Needed to run Hep2O piping for CH in the extension and these made the job real easy. Super sharp and took no effort to go through the joists and with the joists on 400 centres I was able to use my Dewalt drill / driver with these and still have a bot of room to make sure the holes were square / level. A brilliant bit of kit and although I have spade bits would have taken longer and wouldn't have been as neat."
"bought the 3 piece box set for drilling through joists to cable plastic pipes through on a underfloor heating job. used a cordless impact drill driver on impact mode and it just eats it up all day long the bit pulls itself through very fast clean hole very impressed will buy more"
"I bought these to drill holes through joists for pipes and cables. When fitted into a cordless drill, I could drill straight through between the joists without having to start on an angle. This made feeding pipes/cables much easier. The drill pulled itself through easily and cleared the chippings well. Time will tell how long they keep their sharp edge."