مثقاب متدرج، درجة صناعية، 7 طبقات و تشطيبات

• For drilling holes in metal material,wood and hard plastic
• Single cutting edge creates perfectly round holes in metal,plastic,wood and other thin material without center punching
• Material of HSS9341, M2 or others
• Surface treatment: Bright, Titanium, Black, Cobalt, Amber, Nano-blue, Black&Gold

NEW NANO-BLUE COATING: Enables the cutting edge retain crucial sharpness and lubricity with an extreme nano hardness and heat resistance.