Danyang Boyuan Tools Co., Ltd. [China]

1.diamond drill bits aet 2.drilling forcocnrete ,bricks , marble ...stone materials 3.the size rang from 1" to 10"diamater

1.diamond drill bits set

2.drilling forcocnrete ,bricks , marble ...stone materials 3.the size rang from 1" to 10"diamater

4. Core drill bits have a hollow center and cut a circle in the material to create a hole. This results in a hole the size of the drill and a smaller "plug" or "core" which comes from the center. Diamond core drill bits are available in sizes from 1" to 10" (outside diameter).

diamond drill bits set