KAIYU, as a professional factory producing drill bits, we have more than 30 years produce and design experience. By now, we have exported to more than 40 countries, like US, Australia, Brazil, Norway and Saudi Arabia, etc.

We have many kinds of drill bits for our customers to choose, like taper bit(taper button bit, taper chisel bit and taper cross bit), thread bit( R thread and T thread), retrac bit and dth bit( from 3" to 8" are available)