Bench Drilling Retract Thread Button Bit GT60
2020-12-29u2002·u2002Bench Drilling Retract Thread Button Bit GT60 Characteristic (1)Bit body : normal type and retrac type (2)R thread: R22 R25 R28 R32 R38 (3)T thread: T38 T45 T51 ST58 GT60 (4)Bit diameter: 32-127mm. (5)Drill bit models: cross bit/button bit (6)Button bit shape: spherical/parabolic
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