Rock drilling tools factory ProDrill manufactures rock drill bits: T38 Threaded Button Bits is the most important size for benching and long-hole drilling underground.

We will choose to use tungsten carbide of T6，featuring good wear-resistance and toughness.
This type of carbide has already been proved to be the best in world and been competing with those big names worldwide for quite a long time. 
Meanwhile，we will choose to use superior steel suitable for hot insertion technology, by which the drilling bits body will hold the carbide buttons so tightly that reduce the risk of buttons’ dropping out of the holes.
In order to better resist the abrasiveness of rock, spherical shape will be a good option for the carbide  if high speed is not a necessity. 

Diameter 64mm 76mm, 89mm,

Skirt body: retrac, and normal,

Face type: flat, uniface, drop center

Carbide shape:  Dome, ballistic, semi-ballistic

Used in bench drilling, underground long hole drilling to match extension MF rod, MM rod heavy duty top hammer.

9 Dome carbide inserts T38 threaded drill bits with uniface, 64mm diameter and retrac skirt body for bench drilling and underground long hole drilling.

Uni-face design detail of T38-64 threaded button bit, match with extension drill rods.

For more details please watch PDF online:  T38 Drill Bits for Bench Drilling, Long Hole Drilling Underground Catalogue