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With a standard helix right-hand cut and 135° split point, these bits deliver clean, consistent holes with minimal effort — whether you're working in steel, cast iron, non-ferrous metals or hard plastics.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHSS-G Ground Flutes\u003c\/strong\u003e — Precision-ground flutes for superior finish, tighter tolerances, and longer tool life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e135° Split Point\u003c\/strong\u003e — Self-centring tip reduces walking and eliminates the need for a centre punch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Helix, Right Hand Cut\u003c\/strong\u003e — Optimised chip evacuation for smooth, efficient drilling\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlue Oxide Surface Treatment\u003c\/strong\u003e — Improves lubrication and heat resistance for extended bit life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufactured to DIN 338\u003c\/strong\u003e — Industry-standard specification ensuring consistent quality and compatibility\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\u003c\/ul\u003e\n\u003ch3\u003eSuitable For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSteel and high tensile steel up to 900N\/mm²\u003c\/li\u003e\n\u003cli\u003eCast steel and cast iron\u003c\/li\u003e\n\u003cli\u003eNon-ferrous metals\u003c\/li\u003e\n\u003cli\u003eHard plastics\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA dependable everyday drill bit for engineers, fabricators, and tradespeople who need consistent performance across a broad range of materials.\u003c\/p\u003e","brand":"Castlebrook","offers":[{"title":"1mm Metric (Pack of 10 bits)","offer_id":58448534176125,"sku":"C101-0010","price":4.5,"currency_code":"GBP","in_stock":true},{"title":"1.5mm Metric (Pack 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