Diamond Core Drill Bit Multiiple Use 20/30/40/51/63/76/102/120mm Diameter Diameter 20mmx total length 450mm

Apricot ?120mmx370mm
Aqua
?102mmx370mm ??? Green
?76mmx450mm
??? Avocado
?63mmx450mm
??? beige
?51mmx450mm
??? Black
?40mmx450mm
??? Blue
?30mmx450mm
??? Blue Gary
?20mmx450mm [Note: is the choose of the model,not real ;?? just means the meaning of the model ]

Feature:
shape teeth are sharp and tough.
M22 Thread fit for most of water drill.
360°seamless steel pipe, more durable.
Multifunctional for air condition installation, water pipe, traffics and engine room.

Specifications:
: red
Material:metal alloy
Size:20*450mm,
30*450mm
40*450mm
51*450mm
63*450mm
76*450mm
102*370mm
120*370mm

Note:
1. The tool needs to be cleaned before use to ensure accuracy.
2.The amount, rotation speed and should be selected reasonably.
3.After the tool is used, and cleaned and oiled, keep it in a safe place.
4.Check the integrity of the hole drill before use.
5.When drilling the hole, keep the hole perpendicular to the workpiece.
6.Start drilling is to use a small amount of force, and use medium force after positioning.
7.When drilling, the rotation speed should not be too low, so as to avoid the jam and cause the to collapse.
8.After the drilling and drilling work, the hole drill should be rotated to exit the work.
9.When drilling continuously, the edge should be cooled with .

Package Included:
1x drill










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