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Small diameters core drill bits with hot-press sintered diamond
segment
for drilling small holes on various stone, granite, marble, ceramic,
concrete, etc.
Welding method: Silver welded.
Machinery:
Suitable for electrical hand-held drillers or CNC machines.
Wet or
dry(don't recommend) use.
Note:
1. To prolong its using life, better to use with water for
cooling and lubrication.
2. The hole drill bit can be used with bench drill, hand
electric drill.
3. When you using hand electric drill, start slowly at 45 degree
angle and go vertical after you make an initial mark.
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