Ph1 Ph2 Cr-V S2 Steel Screwdriver Bit
Category: Hardware Tools
A screwdriver bit has a shank, a connecting portion, a necking portion defined between the shank and the connecting portion, a head disposed on a distal end of the connecting portion, multiple ribs separately arranged around the connecting portion and the necking portion and multiple shear grooves respectively defined between the connecting portion and the necking portion and each shear groove is defined between two adjacent ribs.
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