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easy gauging
The 60° center angle ensures accurate centering and stable entry
reducing runout and improving finishing accuracy
Laydown triangular geometry for rigidity: The triangular laydown design provides strong edge support
delivering controlled reaming performance with a clean bore finish
OSG 55° Helix Endmill Square Edge - Centre Cutting Long Length - 4mm Blacksmith Drill easy gaugingThe OSG 55 Helix Endmill Square Edge Centre Cutting, Long Length, 4 mm diameter is a compact milling tool built for engineers, shop teams, and DIY machinists who need reliable reach in tight features. It excels at milling, profiling, and slotting, delivering precise, repeatable results in a wide range of materials and setups. With a 55 degree helix, this endmill promotes efficient chip evacuation and reduces cutting forces, helping keep heat in check
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