1)Rock drilling for hard formation 2)medium hard formation and crack-not-grown formation 3)rock formation must not exceed

1.We start to make button bit from 1996, now we can finish 8000 pcs button bit every day.

Our button bit are make of the best alloy for drilling bit and the carbide are import from Europe.

The quality is the best, fit for all kinds of rock.

2.All types meet repuirement.

3.

Kaiyu button bit