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Sometimes we need to use a drill bit to make a hole in the surface of iron, but what kind of drill is good for drilling iron? Do you know the types and uses of drill bits? In fact, there are many types of drill, mainly according to its different...
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1, Drill bits are generally used for drilling and reaming, the common types are twist drill, reaming drill, deep hole drill, chamfering drill and so on - to the best tool OBS twist drill bit. 2, Center bit: generally used for drilling before the...
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29PCS TWIST DRILL BITS HOT IN AMAZON READY TO SHIP
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