기능

• Uses a 3-blade set that is hard to tip even for hard use.
• With an effective length of 35 mm, it is also possible to perforate curved surfaces such as thick steel plates and thick metal pipes.
• For drilling metal siding, iron plates, steel plates (25 mm or less), stainless steel plates (10 mm or less), aluminum plates (5 mm or less), pipe materials, etc.
• Size of blade diameter less than 18 mm is not suitable for penetrating work longer than effective length.
• Do not hit the carbide cutting edge against a hard object or strongly touch the work material when penetrating the center drill.