{"product_id":"forstner-bit-extension-set-150mm-300mm-extra-long-woodworking","title":"2-Piece Forstner Bit Extension Set – 150mm \u0026 300mm Extra Long","description":"\n\u003ch2\u003eReach Deeper with the 2-Piece Forstner Drill Bit Extension Set\u003c\/h2\u003e\n\u003cp\u003eTake your woodworking projects to the next level with this cost-effective 2-piece Forstner bit extension set. Whether you're drilling flat-bottom holes, starting deep hole turning projects on large vases, bowls, or containers, these extra-long extension rods give you the reach you need without sacrificing precision or stability. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× Forstner Bit Extension – 3-1\/4\" (150mm) Drilling Depth\u003c\/li\u003e\n  \u003cli\u003e1× Forstner Bit Extension – 5-3\/4\" (300mm) Drilling Depth\u003c\/li\u003e\n  \u003cli\u003e2× Set Screws\u003c\/li\u003e\n  \u003cli\u003e1× Hex Key (Allen Key) for tightening\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High Carbon Steel – rugged and built for structural stability\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHex Shank Diameter:\u003c\/strong\u003e 3\/8 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTotal Lengths:\u003c\/strong\u003e 4.5 inch (150mm) \u0026amp; 7 inch (300mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtension Length:\u003c\/strong\u003e 3-1\/4\" \u0026amp; 5-3\/4\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCollet Inner Diameter:\u003c\/strong\u003e 3\/8 inch (fits Forstner bits with 3\/8\" or smaller shanks)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface:\u003c\/strong\u003e Precision ground and polished for smooth operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose This Extension Set?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Reach:\u003c\/strong\u003e Extends any compatible Forstner bit by up to 5-3\/4 inches, perfect for deep drilling applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecure Grip:\u003c\/strong\u003e Two set screws and an included hex key lock the bit firmly in place — preventing slippage even at high rotational speeds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Construction:\u003c\/strong\u003e High carbon steel construction with precision-ground surfaces ensures long-lasting durability across demanding woodworking tasks.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGreat Value:\u003c\/strong\u003e Both extension lengths in a single affordable set — ideal for hobbyists and professionals alike.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Works with any standard Forstner drill bit with a 3\/8\" or smaller shank — no need to buy specialty bits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFlat-bottom hole drilling in woodworking\u003c\/li\u003e\n  \u003cli\u003eDeep hole turning projects (vases, containers, bowls)\u003c\/li\u003e\n  \u003cli\u003eCabinet making and furniture construction\u003c\/li\u003e\n  \u003cli\u003eDIY home improvement projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Tools You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-20mm-diamond-flat-grinding-wheel-dry-and-wet-use-heavy-duty-concrete-grinder-wheel-blue-vacuum-brazed\"\u003e10\/20mm Diamond Flat Grinding Wheel – Dry and Wet Use Heavy Duty Concrete Grinder Wheel\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-durable-gold-blade-nut-metal-universal-trimmer-accessories-anti-loosening-line-left-hand-thread-replacement-parts-1\"\u003e10pcs Durable Gold Blade Nut Metal Universal Trimmer Accessories – Anti-Loosening Replacement Parts\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/stainless-steel-self-tapping-screws-m2-2-m4-8-phillips-wood-hinge\"\u003e10PCS Stainless Steel Self-Tapping Screws M2.2–M4.8 Phillips\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What size Forstner drill bits are compatible with this extension set?\u003c\/h4\u003e\n\u003cp\u003eA: The inner diameter of the collet on both extension rods is 3\/8 inch. This means the extensions are compatible with any Forstner drill bit that has a 3\/8 inch or smaller shank. Always ensure your bit shank matches before use.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I secure the drill bit to the extension rod?\u003c\/h4\u003e\n\u003cp\u003eA: Simply insert your Forstner bit into the collet of the extension rod, then use the included hex key (Allen key) to tighten the two set screws firmly. This locks the bit securely in place and prevents slippage during high-speed drilling.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use these extensions with a standard power drill?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The 3\/8-inch hex shank on both extensions is designed to fit standard power drills and drill presses. They are ideal for woodworking applications including flat-bottom holes and deep hole turning projects.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the difference between the two extensions in this set?\u003c\/h4\u003e\n\u003cp\u003eA: The set includes two extensions of different lengths. The shorter one has a total length of 4.5 inches and extends your bit by 3-1\/4 inches, while the longer one has a total length of 7 inches and extends your bit by 5-3\/4 inches. This gives you flexibility depending on the drilling depth you require.\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 size Forstner drill bits are compatible with this extension set?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The inner diameter of the collet on both extension rods is 3\/8 inch. This means the extensions are compatible with any Forstner drill bit that has a 3\/8 inch or smaller shank. 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This gives you flexibility depending on the drilling depth you require.\"}}]}\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:\/\/68k0rh-yt.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/68k0rh-yt.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"2-Piece Forstner Bit Extension Set – 150mm \u0026 300mm Extra Long\", \"item\": \"https:\/\/68k0rh-yt.myshopify.com\/products\/forstner-bit-extension-set-150mm-300mm-extra-long-woodworking\"}]}\u003c\/script\u003e","brand":"Richie's","offers":[{"title":"2pcs","offer_id":57574312542374,"sku":"1005013282994527-2pcs","price":40.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0785\/2182\/7494\/files\/Sc43160a435494e928e50efa14afd0eee4.webp?v=1791242502","url":"https:\/\/richiesmart.com\/products\/forstner-bit-extension-set-150mm-300mm-extra-long-woodworking","provider":"Richie's","version":"1.0","type":"link"}