{"product_id":"step-cone-drill-bit-set-4-12-4-20-4-32mm-steel-hole-cutter","title":"Step Cone Drill Bit Set – 4-12, 4-20 \u0026 4-32mm Steel Cutter","description":"\n\u003ch2\u003eCoated Steel Step Cone Drill Bit – Multi-Size Hole Cutter for Wood, Metal \u0026amp; Plastic\u003c\/h2\u003e\n\u003cp\u003eTackle a wide range of drilling tasks with this versatile \u003cstrong\u003eStep Cone Drill Bit\u003c\/strong\u003e. Made from high-quality steel with a friction-reducing golden coating, this bit delivers fast, smooth, and clean cuts across multiple hole sizes — all in a single tool. Whether you're working on sheet metal, wood, plastic, or brass, this step drill bit replaces an entire set of standard bits.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium Steel Construction:\u003c\/strong\u003e Built for durability and long-lasting performance across repeated use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFriction-Reducing Coating:\u003c\/strong\u003e Golden finish minimises heat build-up and wear, extending the life of the bit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo-Flute Design:\u003c\/strong\u003e Dual flutes cut faster and cleaner, producing smooth, burr-free holes with minimal effort.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClearly Labelled Steps:\u003c\/strong\u003e Each step is engraved with its diameter for quick, accurate hole sizing — no guesswork needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThree Size Options:\u003c\/strong\u003e Choose from 4–12mm, 4–20mm, or 4–32mm to suit your project requirements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Material Compatibility:\u003c\/strong\u003e Ideal for steel, brass, aluminium, wood, plastic, and more.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-Quality Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish \/ Color\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGolden Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize: 4–12mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSteps: 4-6-8-10-12mm | Length: ~67mm \/ 2.64\"\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize: 4–20mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSteps: 4-6-8-10-12-14-16-18-20mm | Length: ~74mm \/ 2.91\"\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize: 4–32mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSteps: 4-6-8-10-12-14-16-18-20-22-24-26-28-30-32mm | Length: ~102mm \/ 4.02\"\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eUsage Tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFor hand drills, use on metal plates \u003cstrong\u003eno thicker than 3mm\u003c\/strong\u003e. For metal plates 3–5mm thick, use only with a stabilised (press) drill.\u003c\/li\u003e\n  \u003cli\u003eApply adequate water cooling while drilling metal to prevent overheating and extend the life of the bit.\u003c\/li\u003e\n  \u003cli\u003eUse a slow, consistent speed for best results — let the bit do the work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Step Cone Drill Bit (your choice of 4–12mm, 4–20mm, or 4–32mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/0-300mm-adjustable-pcb-holder-360-rotation-soldering-stand-clamp\"\u003e0–300mm PCB Holder Stand | 360° Rotation Soldering Clamp\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-inch-25mm-wet-dry-polishing-pad-marble-granite-concrete-7-grits\"\u003e1\" 25mm Wet Dry Polishing Pad – Marble Granite Concrete 7 Grits\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/0-200mm-jewelry-measuring-caliper-bead-stone-gauge-stainless-steel\"\u003e0–200mm Jewelry Caliper – Stainless Steel Bead \u0026amp; Stone Gauge\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor guidance on safe power tool use, visit the OSHA Power Tools Safety Resource. For consumer product safety standards, refer to the U.S. Consumer Product Safety Commission (CPSC).\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Actual product colour may vary slightly from images due to monitor settings and lighting. Please allow minor measurement tolerances of ±1–2mm.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Drill_bit\" target=\"_blank\" rel=\"noopener\"\u003eDrill bit\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What materials can this step cone drill bit cut through?\u003c\/h4\u003e\n\u003cp\u003eA: This step cone drill bit is designed to cut through a wide variety of materials, including steel, brass, aluminium, wood, and plastic. For best results on harder metals, use with water cooling and a stabilised drill press.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What drill sizes are included within each step drill bit?\u003c\/h4\u003e\n\u003cp\u003eA: Each bit covers a range of hole diameters in 2mm increments: the 4–12mm bit covers 4, 6, 8, 10, and 12mm; the 4–20mm bit covers 4 through 20mm; and the 4–32mm bit covers 4 through 32mm — giving you up to 15 different hole sizes in a single tool.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use this step drill bit with a standard hand drill?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — this bit is compatible with standard hand drills for lighter materials and thin sheet metal (up to 3mm). For thicker metal (3–5mm), a stabilised drill press is recommended for safe, accurate results.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Why does the bit have a golden coating?\u003c\/h4\u003e\n\u003cp\u003eA: The golden coating serves as a friction-reducing finish that minimises heat build-up during drilling. This helps extend the working life of the bit and produces cleaner, smoother holes with less effort.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What materials can this step cone drill bit cut through?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This step cone drill bit is designed to cut through a wide variety of materials, including steel, brass, aluminium, wood, and plastic. For best results on harder metals, use with water cooling and a stabilised drill press.\"}}, {\"@type\": \"Question\", \"name\": \"What drill sizes are included within each step drill bit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Each bit covers a range of hole diameters in 2mm increments: the 4–12mm bit covers 4, 6, 8, 10, and 12mm; the 4–20mm bit covers 4 through 20mm; and the 4–32mm bit covers 4 through 32mm — giving you up to 15 different hole sizes in a single tool.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use this step drill bit with a standard hand drill?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — this bit is compatible with standard hand drills for lighter materials and thin sheet metal (up to 3mm). For thicker metal (3–5mm), a stabilised drill press is recommended for safe, accurate results.\"}}, {\"@type\": \"Question\", \"name\": \"Why does the bit have a golden coating?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The golden coating serves as a friction-reducing finish that minimises heat build-up during drilling. This helps extend the working life of the bit and produces cleaner, smoother holes with less effort.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/oasis-select.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Sewing \u0026 Hand Tools\", \"item\": \"https:\/\/oasis-select.com\/collections\/sewing-hand-tools\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Step Cone Drill Bit Set – 4-12, 4-20 \u0026 4-32mm Steel Cutter\", \"item\": \"https:\/\/oasis-select.com\/products\/step-cone-drill-bit-set-4-12-4-20-4-32mm-steel-hole-cutter\"}]}\u003c\/script\u003e","brand":"Oasis Select","offers":[{"title":"4-12mm","offer_id":47748327702633,"sku":"14:365458#4-12mm","price":4.23,"currency_code":"USD","in_stock":true},{"title":"4-32mm","offer_id":47748327735401,"sku":"14:350852#4-32mm","price":4.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7931\/3257\/files\/S4c2fca17290b4cb2a5db5f6086032559a.webp?v=1783083203","url":"https:\/\/oasis-select.com\/products\/step-cone-drill-bit-set-4-12-4-20-4-32mm-steel-hole-cutter","provider":"Oasis Select","version":"1.0","type":"link"}