{"product_id":"adjustable-countersink-drill-bit-carbide-wood-reamer","title":"Adjustable Countersink Drill Bit – Carbide Wood Reamer","description":"\n\u003ch2\u003eAdjustable Countersink Drill Bit – Precision Woodworking Reamer\u003c\/h2\u003e\n\u003cp\u003eTake your woodworking projects to the next level with this \u003cstrong\u003eAdjustable Countersink Drill Bit\u003c\/strong\u003e. Engineered for both professional craftsmen and dedicated DIY enthusiasts, this carbide-tipped chamfer bit delivers perfectly flush, clean screw seats every single time — whether you're building furniture, installing cabinets, or crafting custom wood joinery.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Depth Control (2.5mm–10.5mm):\u003c\/strong\u003e Fine-tune the countersink depth precisely for consistent, professional screw seating across every workpiece — no guesswork, no ugly exposed screw heads.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium YG8 Carbide Cutting Head:\u003c\/strong\u003e The knife head is crafted from high-grade YG8 carbide alloy, delivering superior hardness, exceptional wear resistance, and long-lasting sharpness even under heavy use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e45# Steel Drill Body:\u003c\/strong\u003e The robust 45# steel shank provides rigidity and stability, minimizing vibration for cleaner, more accurate holes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHex Screw Lock \u0026amp; Round Shank Chamfer:\u003c\/strong\u003e A secure hex screw firmly locks the bit in place during operation, while the round shank chamfer ensures quick, easy setup with a wide range of drills and woodworking tools.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Material Compatibility:\u003c\/strong\u003e Performs excellently on pine, solid hardwood, MDF, and particleboard — covering virtually every common woodworking material.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple Sizes Available:\u003c\/strong\u003e Choose from 10 size options to perfectly match your screw requirements: 8×2.8mm, 8×3.0mm, 8×3.2mm, 8×3.5mm, 4.0×8mm, 2.8×10mm, 3.0×10mm, 3.2×10mm, 3.5×10mm, 4.0×10mm.\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\u003eCutting Head Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYG8 Carbide Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDrill Body Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e45# Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAdjustable Core Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5mm – 10.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable Sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8×2.8mm, 8×3.0mm, 8×3.2mm, 8×3.5mm, 4.0×8mm, 2.8×10mm, 3.0×10mm, 3.2×10mm, 3.5×10mm, 4.0×10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFurniture making, wood joinery, hidden screw installation, DIY woodcraft, cabinet processing\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 × Adjustable Countersink Drill Bit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFurniture manufacturing and assembly\u003c\/li\u003e\n  \u003cli\u003eCabinet installation and joinery\u003c\/li\u003e\n  \u003cli\u003eHidden screw installation for clean finishes\u003c\/li\u003e\n  \u003cli\u003eDIY woodcraft and home improvement projects\u003c\/li\u003e\n  \u003cli\u003eProfessional carpentry and workshop use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDue to monitor\/display variation, actual color may differ slightly from images.\u003c\/li\u003e\n  \u003cli\u003ePlease allow a tolerance of 1–3mm due to manual measurement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What materials can this adjustable countersink drill bit work with?\u003c\/h4\u003e\n\u003cp\u003eA: This countersink drill bit is designed to work effectively on a wide variety of wood-based materials including pine, solid hardwood, MDF (medium-density fiberboard), and particleboard. Its YG8 carbide alloy cutting head maintains sharpness across these surfaces for consistent, clean results.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I adjust the countersink depth on this drill bit?\u003c\/h4\u003e\n\u003cp\u003eA: The bit features a simple adjustable core mechanism spanning 2.5mm to 10.5mm. Loosen the hex screw, slide the inner bit to your desired depth, then re-tighten the hex screw to lock it firmly in position before drilling.\u003c\/p\u003e\n\u003ch4\u003eQ: Which drill sizes and screw types is this countersink bit compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: Ten size configurations are available — 8×2.8mm, 8×3.0mm, 8×3.2mm, 8×3.5mm, 4.0×8mm, 2.8×10mm, 3.0×10mm, 3.2×10mm, 3.5×10mm, and 4.0×10mm — allowing you to match the bit precisely to your screw head diameter and shank requirements for a perfect flush finish.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this countersink bit compatible with standard power drills?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The round shank with chamfer design ensures secure, easy fitment with most standard power drills, cordless drills, and drill presses commonly used in woodworking and carpentry applications.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What materials can this adjustable countersink drill bit work with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This countersink drill bit is designed to work effectively on a wide variety of wood-based materials including pine, solid hardwood, MDF (medium-density fiberboard), and particleboard. 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