Welcome to visit Ruilong PDC drill bit page ! Ruilong Drill had produced PDC drill bit for more than 20 years in China . Trust us will offer you the right PDC drill bit and support your project work . How to choose the right PDC drill bit?Rd17 male half cutter PDC anchor drill bit roof bolt bit 1,Whats the diameter of hole do you want to drill ? Then we can know which item drill bit is suitable you . 2,Whats the layer do you want to drill ? Then we can know which PDC tip is right for you .
