L/D - 5 (Internal Coolant)
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Features and benefits
- MSTM’s AT1 drills are designed for maximum value and good performance when drilling a wide variety of materials, ranging from soft, non-ferrous materials to semi-hardened steels.
- Twister GP drills are an excellent choice for all general-purpose hole-making applications.
- Next-generation HiPIMS technology FerroCon coating results in maximum tool surface hardness and smoothness resulting in increased tool life and maximum productivity.
- Recommended for drilling cast iron, unalloyed and alloyed steels, up to 45 HRC.