Alpen HSS Super Drill Bits Long Series Bulk, (ALP55xxx)
Alpen HSS Super Drill Bits Long Series Bulk, (ALP55xxx) bits Long Series in Bulk are precision-ground high-speed steel (HSS) twist drills from the 551 series (DIN 340 RN standard), featuring extended lengths for deep-hole drilling in alloyed/unalloyed steel, non-ferrous metals, and plastics. Available in bulk packs of 10 bits per size (e.g., ALP55103=3mm×100mm, ALP551015=1.5mm×70mm, ALP55102=2mm×85mm), they offer sharp 118° split points for easy starting and break resistance.
These Austrian-made bits suit production workshops, maintenance teams, and fabricators needing cost-effective long-reach drilling without jobber-length limitations







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