For drilling all materials except copper, until ø 5 to 28 mm, for boring, making round holes out of notches. A real timesaving : no bit to change, drill direct with no preparation. Easy to sharpen : only the neck, no need to sharpen the bearings. The bits are made from high strenght treated steel Molybdenum M2. Please keep to recommended rotation speeds : 350 revolution / mn.
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The minimum purchase order quantity for the product is 1
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