DIA-4 → Tool Diameter: 4 mm
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R0.5 → Corner Radius: 0.5 mm (gives strength to the cutting edge & improves tool life)
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75L → Overall Tool Length: 75 mm
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4F → Number of Flutes: 4 Flutes (suitable for finishing & semi-finishing in steels, alloys, etc.)
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HRC55 → Hardness rating (tool is designed to cut materials up to 55 HRC hardness — medium hardness steels, tool steel, alloy steels, etc.)
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Corner Radius End Mill → This tool has a corner radius instead of sharp edges, which helps reduce chipping and increases durability.
It’s a 4 mm Corner Radius End Mill (R0.5), 75 mm long, 4-flute, designed for cutting materials up to HRC55 hardness — best for precision machining, longer tool life, and smoother cutting edges.
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