down the-hole drill bit
drill bit 1.good quality 2.it is be used in mines,geological exploration,water and electricity.
Drill Bit
Our company is specialized in making pneumatic tools. For many years, It has committed itself to producing, developing various kinds of pneumatic tools for tunneling in mines, roads and tunnels, drilling blast-holes. Our pneumatic rock drill is popular with customers for their high performance, high efficiency, light and convenience.
down the-hole drill bit
