The innovative core of the Thunderweb HSS drill has a conical design, which means it gets stronger towards the drill shaft, for a longer service life. The parabolic chip groove enables rapid chip removal for less heat development and a longer service life. Spiral geometry – Thunderweb spiral for faster removal of hot chips. Better heat distribution for a longer service life. 135 drill tip with cross grinding for precise drilling without punching. Polished surface for less friction and a longer service life. ABS cassette with additional soft grip to protect the corners. Withstands high contact pressure for greater resistance to breakage

diameter 9.1
working length 81
total length 125
Contents 5

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