NCCTEC Diamond Core Drill Bits, diameter is 6mm-200mm,0.24''-8'',max length can reach 420mm/17''.
12'' inch Core Bit shaft Extension | 300mm core drill bits extension shaft | for drilling deep hole thick wall.
the inner shaft has water flow trough.
diameter requirement of your core bits : when the diameter of your core bits is more than 28mm 1.1'', then you can use this extension shaft to connect.
you can connect several extension shafts for a long length.
when you found the normal core bits are not long enough to drill, please use the extension shaft to increase the length, it is suitable for 90% drill machine on the market.
information of our core bits:
Speed :0.82cm per
minute.
Performance:
NCCTEC core bits select the high-quality diamond and alloy powder, professional reinforce the high standard fixture concrete, high-density reinforced concrete,brick design formula of high-density reinforced concrete, fast drilling speed, long life.
Rooftop tooth design.
good Concentricity.
guarantee small work swing and high precision drill.
Using the the German CNC laser welding
equipment and technology to produce a world-class level products,head welding
firm,not easy to drop tooth,fast drilling speed.
NCCTEC Integrated drill
has affordable prices for concrete,drill the wall , has a good
performance.
if the drill items containing fixture, it is recommended to
use the separated structure drill,it has longer life and easier to replace the
ncctec core drill head.