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Stepped/twist drill bit assortment
Ruko stepped drill bit set 3 pieces HSS-TiAlN spiral-fluted in sizes 0/9, 1, 2
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Variants
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The deep-ground and spiral groove offers absolute smoothness and high cutting performance. In particular, non-breaking chips are transported away cleanly as with a twist drill bit. This reduces the formation of built up edges and cold welds on cutting edges. The taper facilitates retraction in drilled-through sheet metal.
Diameter 4.0-12.0 mm/4.0-20.0 mm/4.0-30.0 mm
Select RAL-colour code
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