Vacuum brazed tooth-type core bit is used for drilling stones with super long working life and super high efficiency. This product is a patent product in China.

Regular diameters are between 20mm and 100mm.

The core bit includes shank and thread, which consists of male thread and female thread. M14 and M5/8” are female thread. Gas thread is male thread.

There're three kinds of mesh: coarse, medium and fine.