.It consists of a layer of polycrystalling diamomd integrally sintered to a tungsten carbide substrate under high pressure amd high temperature.PDC cutters combines the hardness and abrasion resisrance of diamond with the impact resistance of tungsten carbide ,amd provides faster,more durable amd more cost -effective drilling .

Supreme drill bits are made of PDC by good welding technology, which have good wear resistance and strong impact resistance to faster drilling speed and longer life when drilling. It doesn't need repeat replacing and grinding the bits, and increase supporting efficiency, decrease the labour strength. Cost definitely is lower than the traditional bits.

Specifications: 25mm, 26mm, 27mm, 28mm, 30mm, 32mm, 36mm

Thread size: 14X1.5 14X2 16X2

Different specification and size can be made per customers' request