{"product_id":"irwin-unibit-titanium-metric-self-starting-step-drill-4mm-to-22mm-16104","title":"Irwin Unibit Titanium Metric Self‑Starting Step Drill, 4mm to 22mm | 16104","description":"\u003ch4\u003eProduct Description:\u003cbr\u003e\n\u003c\/h4\u003e\n\u003cp\u003eProfessional metric step drill bit engineered for efficient hole drilling and enlargement across a range of diameters without changing bits. This Irwin Unibit features a single-flute design with a self-starting SpeedPoint® tip that helps prevent walking and improves centring on thin materials, a common requirement when working with sheet metal, aluminum panels, plastics, and laminates in automotive and collision environments. The titanium nitride (TiN) coating enhances heat resistance and cutting-edge durability in frequent drilling applications.\u003c\/p\u003e\n\u003cp\u003eCovering hole sizes from approximately 4 mm up to 22 mm in consistent 2 mm increments, this step drill bit simplifies workflows where multiple hole sizes are needed, such as installing grommets, routing wiring, mounting hardware, or enlarging existing access holes during panel repair and assembly. The 3-flat shank helps prevent slipping in standard drill chucks.\u003c\/p\u003e\n\u003ch4\u003eKey Features:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSelf-starting SpeedPoint® tip for reliable starts and reduced walking on sheet surfaces.\u003c\/li\u003e\n\u003cli\u003eTitanium nitride (TiN) coating increases heat resistance and extends tool life in thin metals.\u003c\/li\u003e\n\u003cli\u003eStep drill design covers hole sizes from ~4 mm to ~22 mm in 2 mm increments (10 sizes).\u003c\/li\u003e\n\u003cli\u003eSingle-flute cutting edge supports clean, round holes with controlled feed.\u003c\/li\u003e\n\u003cli\u003e3-flatted 3\/8″ shank reduces slipping in drill chucks for stability.\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction suited to thin sheet metal and non-ferrous materials.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eIdeal For:\u003cbr\u003e\n\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody and collision shops:\u003c\/strong\u003e drilling and enlarging holes in automotive sheet metal, brackets and access panels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical and fabrication work:\u003c\/strong\u003e versatile hole making in aluminum, steel, plastics, and laminates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical and trim installation:\u003c\/strong\u003e clean hole sizes without frequent bit changes.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Irwin","offers":[{"title":"Default Title","offer_id":47865216696555,"sku":"16104","price":120.23,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0545\/1061\/6745\/files\/16104-1.jpg?v=1771956680","url":"https:\/\/www.titanium22.ca\/products\/irwin-unibit-titanium-metric-self-starting-step-drill-4mm-to-22mm-16104","provider":"Titanium Tools \u0026 Equipment Inc","version":"1.0","type":"link"}