{"product_id":"us5250sdu-3pc","title":"Ultra-Shear Spiral Dovetail Router Bits 3 Piece Set | 1\/2 SH | 1\/2 CD | 2 FL | Solid Carbide, Up Cut - US5250SDU-3PC","description":"\u003cp\u003e\u003cspan\u003eSPECS - US5250SDU-3PC | 3 Piece Set | 1\/2\" Cut Diameter | 1\/2\" Shank | Up Cut | 2 Flute | Solid Carbide | Spiral Router Bit | USA Made\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan class=\"a-list-item\"\u003eUltra-Shear Spiral Dovetail Router Bit Chart\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; min-width: 300px; max-width: 600px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center; width: 22.6634%;\"\u003e\u003cstrong\u003ePart #\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 24.2446%;\"\u003e\u003cstrong\u003eShank Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 28.2853%;\"\u003e\u003cstrong\u003eCut Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 23.7175%;\"\u003e\u003cstrong\u003eCut Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center; width: 22.6634%;\"\u003e\u003ca href=\"https:\/\/ultra-shear.com\/products\/US2075U\" title=\"US2075U Router Bit\"\u003e\u003cb\u003eUS525008SDU \u003c\/b\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 24.2446%;\"\u003e\u003cstrong\u003e1\/2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 28.2853%;\"\u003e\u003cstrong\u003e1\/2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 23.7175%;\"\u003e\u003cstrong\u003e13\/16\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center; width: 22.6634%;\"\u003e\u003ca href=\"https:\/\/ultra-shear.com\/products\/US2075D\" title=\"US2075D Router Bit\"\u003e\u003cb\u003eUS525010SDU \u003c\/b\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 24.2446%;\"\u003e\u003cstrong\u003e1\/2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 28.2853%;\"\u003e\u003cstrong\u003e1\/2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 23.7175%;\"\u003e\u003cstrong\u003e25\/32\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center; width: 22.6634%;\"\u003e\u003ca href=\"https:\/\/ultra-shear.com\/products\/US2100U\" title=\"US2100U Router Bit\"\u003e\u003cb\u003eUS525014SDU \u003c\/b\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 24.2446%;\"\u003e\u003cstrong\u003e1\/2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 28.2853%;\"\u003e\u003cstrong\u003e1\/2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 23.7175%;\"\u003e\u003cstrong\u003e9\/16\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eUltra-Shear Spiral Dovetail Router Bits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSmooth \u0026amp; Chatter-Free Dovetail Precision\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUltra-Shear Solid Carbide Spiral Dovetail Bits solve the most common challenge in joinery: the \"one-pass\" requirement. Unlike standard bits, these utilize spiral cutting geometry to ensure the bit is constantly engaged with the wood, eliminating the interrupted cuts and heavy vibration that lead to chatter. Crafted from micro-grain carbide with ultra-fine grinding, they deliver the sharpest and cleanest dovetail joints available.\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003e\u003cstrong\u003eIncludes Essential Angles for Diverse Joinery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"3\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,0,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"3,0,0\"\u003e8° Angle:\u003c\/b\u003e .825\" cut length for a classic, subtle dovetail appearance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,1,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"3,1,0\"\u003e10° Angle:\u003c\/b\u003e .780\" cut length, providing a balanced look for various furniture styles.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,2,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"3,2,0\"\u003e14° Angle:\u003c\/b\u003e .563\" cut length, offering a steep, traditional aesthetic for smaller projects.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,3,0\"\u003eAll bits feature a \u003cb data-index-in-node=\"19\" data-path-to-node=\"3,3,0\"\u003e1\/2\" shank\u003c\/b\u003e and a \u003cb data-index-in-node=\"36\" data-path-to-node=\"3,3,0\"\u003e1\/2\" diameter\u003c\/b\u003e at the widest point for maximum stability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"4\"\u003eThis range ensures you have the perfect mechanical lock and visual appeal for everything from heavy-duty drawers to delicate jewelry boxes.\u003c\/p\u003e\n\u003cp data-path-to-node=\"5\"\u003e\u003cstrong\u003eIdeal for Flawless Joinery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"6\"\u003eDovetail joints are the hallmark of fine craftsmanship, but they can be punishing on tools. Because the widest part of the bit is at the tip, traditional bits often struggle with heat and chip evacuation. The spiral up-cut design of these Ultra-Shear bits pulls shavings up and out of the joint, turning what would normally be wood dust into \"fluff\" and leaving behind a smooth surface that fits perfectly every time.\u003c\/p\u003e\n\u003cp data-path-to-node=\"7\"\u003e\u003cstrong\u003eVersatility Beyond CNC\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"8\"\u003eWhile CNC applications are a primary use for precise automated joinery, these bits shine in hand-held routers with dovetail jigs or on router tables and horizontal routing systems. They are ideal for creating sliding dovetails, drawer joinery, and decorative inlaid accents. Whether you are using a dovetail jig or a horizontal mortiser, the continuous spiral engagement provides a level of control and safety that straight-edged bits simply can't match.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMade in the USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAll Ultra-Shear Solid Carbide bits are manufactured in Strongsville, Ohio facility. We use high-quality carbide blanks, ultra-fine grinding wheels, and advanced CNC grinding equipment to produce great American-made router bits.\u003c\/p\u003e\n\u003cp class=\"a-spacing-base\"\u003e\u003cstrong\u003e\u003cspan class=\"a-text-bold\"\u003eRecommended RPM\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"a-spacing-base\"\u003e\u003cspan\u003eRange:  18,000 - 22,000 (\u003c\/span\u003e\u003cspan\u003emax 24,000)\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"width: 100%; min-width: 300px; max-width: 600px;\"\u003e\n\u003cdiv style=\"position: relative; width: 100%; overflow: hidden; padding-top: 56.25%; text-align: center;\"\u003e\u003ciframe height=\"315\" width=\"560\" src=\"https:\/\/www.youtube.com\/embed\/irO6UsbOU1w?rel=0\" style=\"position: absolute; top: 0; left: 0; right: 0; width: 100%; height: 100%; border: none;\"\u003e\n    \u003c\/iframe\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Ultra-Shear","offers":[{"title":"Default Title","offer_id":52890664993135,"sku":"US5250SDU-3PC","price":219.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/1432\/1007\/files\/Screenshot2026-04-22at12-04-44DovetailSpiralRouterBitSetSolidCarbide1_2Shank.png?v=1776873902","url":"https:\/\/ultra-shear.com\/products\/us5250sdu-3pc","provider":"Ultra-Shear","version":"1.0","type":"link"}