How can the drill bit not fit the drill?
Did you say that the drilling machine is a water drill -- diamond drilling machine? If so, the output shaft parts of the thread of the machine is divided into Tongling and Beijing silk silk, is divided into coarse and fine teeth, if your bit is fine, the output shaft of your machine is coarse words, is certainly not installed Oh, this kind of situation, you can buy a transfer joint, the coarse fine teeth, can be oh! What brand of drilling machine do you use? The eastern Ding Jian diamond is the leader, you can go and see the!
No need to drill thread.? I have sharp, national shipments
