I bought some replacement bits for our Magdrill range. I got a call from the field warning that one of the nozzles had ruptured in the middle of the job and I was concerned that if I didn't have anything in the chamber ready to fire we would be out of luck. Find out I also bought a discounted cheap set a while ago during Prime Days. What happened was they used a cheap set, not Hougens, and turned on the drill when the chisel was loaded and cutting chips. As a result, an inexpensive nozzle shattered into many small, hard, brittle fragments. We use Hougen bits, their lube and drills and it's a very reliable system.