{"product_id":"hss-step-drill-bit-3-piece-set-castlebrook","title":"HSS Step Drill Bit 3 Piece Set | 4-12, 4-20, 4-30 | M2 High Speed Steel | Castlebrook","description":"\u003cp\u003eOur Premium Step Drill Range: The \u003cstrong\u003eCastlebrook HSS Straight Flute Step Drill 3 Piece Set\u003c\/strong\u003e gives you three precision-ground M2 High Speed Steel step drills in one case — covering 4-12mm, 4-20mm, and 4-30mm — so you can drill, enlarge, and deburr holes in thin sheet metal without changing tools.\u003c\/p\u003e\n\u003cp\u003eWhether you're working on electrical enclosures, ducting, automotive panels, or fabrication projects, these step drills cut cleanly through sheet metal up to 2mm thick with minimal effort. Use with a lubricant to maximise the already impressive tool life.\u003c\/p\u003e\n\u003ch3\u003eWhat's in the Set\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-12mm Step Drill\u003c\/strong\u003e – Steps from 4mm to 12mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-20mm Step Drill\u003c\/strong\u003e – Steps from 4mm to 20mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-30mm Step Drill\u003c\/strong\u003e – Steps from 4mm to 30mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM2 High Speed Steel\u003c\/strong\u003e – Premium grade for durability and heat resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStraight flute design\u003c\/strong\u003e – Clean, accurate holes in thin sheet metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufactured to DIN 1412 C\u003c\/strong\u003e – Industry-standard specification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrills, enlarges and deburrs\u003c\/strong\u003e – Three operations in one tool\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSuitable for sheet metal up to 2mm thick\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLubricant recommended\u003c\/strong\u003e – Extends tool life significantly\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSupplied in a protective carry case\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSuitable For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThin sheet metal (up to 2mm)\u003c\/li\u003e\n\u003cli\u003eElectrical enclosures and panels\u003c\/li\u003e\n\u003cli\u003eAutomotive bodywork and fabrication\u003c\/li\u003e\n\u003cli\u003eDucting and HVAC\u003c\/li\u003e\n\u003cli\u003eGeneral engineering and metalwork\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Castlebrook","offers":[{"title":"Default Title","offer_id":58454343876989,"sku":"C131-0004SET-2","price":43.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/3064\/8957\/files\/c131-0004set.jpg?v=1785390686","url":"https:\/\/mrhtradesupplies.co.uk\/products\/hss-step-drill-bit-3-piece-set-castlebrook","provider":"MRH Supplies","version":"1.0","type":"link"}