1" cutting diameter, 2 flutes, single end, ball nose, long reach length, uncoated.
Ground from solid carbide. This tool cuts 1" diameter, runs a 1" shank, has 1-1/4" of flute and measures 6" overall.
The ball nose leaves a radiused bottom, which is what you want for 3D contours, fillets and mould surfaces rather than flat floors.
The necked long-reach body gets the cutting edge down into a deep feature while keeping the shank close to full diameter for rigidity.
Uncoated, so the edge stays as sharp as it can be ground — the usual choice for aluminium and other soft, sticky materials.
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