Drill bit is a kind of diamond tool to drill round hole in the stone. In the large-scale factory, drill bit is jointed with special machine tool through screw thread and cuts stone revolving under the pressure. In the operation, water is infused into the water channel and outflow from the gap of bit’s outer circle for cooling and discharging stone powder. The high capability of water-though can prolong bit’s life-span and keep the sharpness of bit.
In the small factory, the worker use electric drill to drill holes. Being restricted by the equipments, the operator could only immit the water through the water pipe and must often raise the drill up to let the water in, this bring on bad effect of cooling and discharging. So the drill bit used on the electric drill must own higher quality. According to these, our company produces brazed drill bit to fit handy and electric drills. There are slots on the heads of the drill bits and the gaps of inner and outer circle are wider in order to contain more powder and avoid the burning of bit caused by the block of powder.
Thread size: M14 G1/2" 5/8"-11 M28
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