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Engineered with 5% cobalt for superior heat resistance, these bits cut faster, last longer, and tackle the toughest materials on site — from stainless steel and hardened alloys to cast iron and hard plastics.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHSS-Co5 Cobalt Construction\u003c\/strong\u003e — 5% cobalt content delivers increased heat resistance and cutting performance under demanding conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e135° Split Point\u003c\/strong\u003e — Precision split point for accurate centring without the need for a centre punch, reducing walking and improving hole accuracy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGround Flute\u003c\/strong\u003e — Precision-ground flutes for smoother chip evacuation and a cleaner, more consistent finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Metric \u0026amp; Imperial Range\u003c\/strong\u003e — Available in a comprehensive range of sizes to suit every application\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLonger Tool Life\u003c\/strong\u003e — Cobalt alloy construction means fewer bit changes and lower cost per hole\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSuitable For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStainless steel\u003c\/li\u003e\n\u003cli\u003eHardened alloy steel\u003c\/li\u003e\n\u003cli\u003eCast iron\u003c\/li\u003e\n\u003cli\u003eHard plastics\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA must-have for engineers, fabricators, and tradespeople who demand precision and durability from their tooling.\u003c\/p\u003e","brand":"Castlebrook","offers":[{"title":"1mm Metric (Pack of 10 bits)","offer_id":58446350713213,"sku":"C107-0010","price":9.7,"currency_code":"GBP","in_stock":true},{"title":"1.5mm Metric (Pack of 10 bits)","offer_id":58446350745981,"sku":"C107-0015","price":9.7,"currency_code":"GBP","in_stock":true},{"title":"2mm Metric (Pack of 10 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