Straight Shank Drill Bit and Taper Shank Drill Bit
There is a big difference between taper shank drill bits and straight shank drill bits. HSS straight shank twist drill bits are the most widely use hole processing tool. Usually, the diameter ranges from 0.25 to 80 mm. It mainly consists of a working part and a handle, the working part has two spiral grooves, which look like twists, hence the name.
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