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#Bosch Hammer Drill Bit#Sds Mansory Drill Bit#Drill Bit for Concrete 2
auger twist drill bit
In order to reduce the friction between the guide part and the hole wall when drilling, auger Twist drill bit gradually reduces the diameter to the shank direction of the inverted cone. The helical Angle of aircraft Twist Drill bit mainly affects the size of cutting edge forward Angle, edge flap strength and chip removal performance. Twist Drill bit Bunnings are usually 25° ~ 32°.
3 years ago
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