76mm, 80mm T45 Thread Button Bits Rock Drilling Tools With Angle 300 - 400 Spherical Button Type

76mm, 80mm T45 Thread Button Bits Rock Drilling Tools With Angle 300 - 400 Spherical Button Type Description: T45 Retract thread button bits T45 Retract thread button bits, with angle of 300 to 400, thread type of 45T, water holes of 2 to 5, button number of 12 to 14, and buttons can be spherical or ballistic. Outside diameter (mm) Angle Thread type Button type Button number Water holes Item No. 76 400 45T spherical/ballistic 12 2 QY1276-45T 76 350 45T spherical/ballistic 12