{"product_id":"50pc-carbide-micro-drill-set-78-74-10-each-s3a","title":"#78–#74 Carbide Micro Drill Set, 50 Pc, 5 Sizes, 10 Each, 1\/8\" Shank | S3A","description":"\u003ch2\u003e50-Piece Carbide Micro Drill Set – #78 Through #74\u003c\/h2\u003e\n\n\u003cp\u003e\nThis \u003cstrong\u003e50-piece solid carbide micro drill set\u003c\/strong\u003e includes\n\u003cstrong\u003e10 drills each of 5 consecutive numbered sizes\u003c\/strong\u003e:\n\u003cstrong\u003e#78, #77, #76, #75, and #74\u003c\/strong\u003e. The included diameters range from\n\u003cstrong\u003e.0160\" through .0225\"\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis selected-size assortment is useful for PCB drilling, electronics work, fine-detail CNC machining,\nmodel making, precision repair, carburetor jet work, and other applications where multiple drills\nof these commonly used small sizes are needed.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe \u003cstrong\u003eS3A set\u003c\/strong\u003e is not a full incremental assortment. It provides\n\u003cstrong\u003eten drills of each included size\u003c\/strong\u003e, making it a practical choice for repeat drilling,\nreplacement inventory, or production work involving this specific size range.\n\u003c\/p\u003e\n\n\u003cp\u003e\nUse the option selector to choose between \u003cstrong\u003eLightly Used Drills\u003c\/strong\u003e and\n\u003cstrong\u003eFactory Resharpened Drills\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003cdiv style=\"border:1px solid #d9d9d9; padding:14px; margin:16px 0; background:#f7f7f7; border-radius:5px;\"\u003e\n  \u003cstrong\u003eCondition options:\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\n\n  \u003cstrong\u003eLightly Used Drills:\u003c\/strong\u003e Previously used solid carbide drills offered as an economical option.\n  Cosmetic appearance and evidence of prior use may vary.\u003cbr\u003e\u003cbr\u003e\n\n  \u003cstrong\u003eFactory Resharpened Drills:\u003c\/strong\u003e Professionally resharpened solid carbide drills restored to\n  like-new cutting condition.\n\u003c\/div\u003e\n\n\u003ch3\u003eBest For\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003ePCB drilling and electronics prototyping\u003c\/li\u003e\n  \u003cli\u003eFine-detail CNC and precision drilling\u003c\/li\u003e\n  \u003cli\u003eModel making and repair work\u003c\/li\u003e\n  \u003cli\u003eSmall-hole drilling in plastics, composites, and suitable non-ferrous materials\u003c\/li\u003e\n  \u003cli\u003eCarburetor jet sizing and other precision orifice work\u003c\/li\u003e\n  \u003cli\u003eApplications requiring multiple drills of the same five sizes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSet Summary\u003c\/h3\u003e\n\n\u003ctable style=\"width:100%; border-collapse:collapse;\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003cth style=\"text-align:left; border:1px solid #d8d8d8;\"\u003eSet Type\u003c\/th\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003eSelected-Size Solid Carbide Micro Drill Set\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth style=\"text-align:left; border:1px solid #d8d8d8;\"\u003eTotal Pieces\u003c\/th\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e50 drills\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth style=\"text-align:left; border:1px solid #d8d8d8;\"\u003eNumber of Sizes\u003c\/th\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e5 selected sizes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth style=\"text-align:left; border:1px solid #d8d8d8;\"\u003eQuantity Per Size\u003c\/th\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e10 drills each\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth style=\"text-align:left; border:1px solid #d8d8d8;\"\u003eNumbered Size Range\u003c\/th\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e#78 through #74\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth style=\"text-align:left; border:1px solid #d8d8d8;\"\u003eDiameter Range\u003c\/th\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e.0160\" through .0225\"\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth style=\"text-align:left; border:1px solid #d8d8d8;\"\u003eShank Diameter\u003c\/th\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e1\/8\" \/ 3.175 mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth style=\"text-align:left; border:1px solid #d8d8d8;\"\u003eOverall Length\u003c\/th\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003eApproximately 1.50\"\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth style=\"text-align:left; border:1px solid #d8d8d8;\"\u003eMaterial\u003c\/th\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003eSolid Carbide\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth style=\"text-align:left; border:1px solid #d8d8d8;\"\u003eDepth-Stop Rings\u003c\/th\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003eIncluded where shown\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth style=\"text-align:left; border:1px solid #d8d8d8;\"\u003eAvailable Conditions\u003c\/th\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003eLightly Used or Factory Resharpened\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth style=\"text-align:left; border:1px solid #d8d8d8;\"\u003eSKU\u003c\/th\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003eS3A\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eIncluded Sizes – 10 Drills Each\u003c\/h3\u003e\n\n\u003ctable style=\"width:100%; border-collapse:collapse;\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003cth style=\"text-align:left; border:1px solid #d8d8d8;\"\u003eNumber Size\u003c\/th\u003e\n      \u003cth style=\"text-align:left; border:1px solid #d8d8d8;\"\u003eDecimal Diameter\u003c\/th\u003e\n      \u003cth style=\"text-align:left; border:1px solid #d8d8d8;\"\u003eMetric Reference\u003c\/th\u003e\n      \u003cth style=\"text-align:left; border:1px solid #d8d8d8;\"\u003eQuantity\u003c\/th\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e#78\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e.0160\"\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e0.40 mm\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e10\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e#77\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e.0180\"\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e0.45 mm\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e10\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e#76\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e.0200\"\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e0.50 mm\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e10\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e#75\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e.0210\"\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e—\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e10\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e#74\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e.0225\"\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e—\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #d8d8d8;\"\u003e10\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp style=\"font-size:13px; color:#666; margin-top:10px;\"\u003e\nFlute lengths for new drills are shown in the product images when available. Resharpened or used drills may vary.\n\u003c\/p\u003e\n\n\u003ch3\u003eBenefits\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e50 total drills with 10 drills per included size\u003c\/li\u003e\n  \u003cli\u003eFive consecutive numbered sizes from #78 through #74\u003c\/li\u003e\n  \u003cli\u003eUseful for repeat work where extra drills of the same sizes are needed\u003c\/li\u003e\n  \u003cli\u003eStandard 1\/8\" shanks fit many PCB drill holders, CNC collets, and precision drilling setups\u003c\/li\u003e\n  \u003cli\u003eChoice of economical lightly used drills or factory-resharpened drills\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant Use Note\u003c\/h3\u003e\n\n\u003cp\u003e\nSolid carbide drills are rigid and wear resistant, but they are also brittle.\nUse a stable holder, low-runout spindle, drill press, mill, CNC machine, micro drill fixture,\npin vise, or other controlled setup. Keep the drill aligned with the work and avoid side pressure,\nbending, or forcing the tool.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe exact drill style, flute length, point geometry, manufacturer, ring color, and cosmetic appearance may vary\nacross the assortment. The included diameters and quantities are shown in the size chart above.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003ca href=\"\/pages\/carbide-drill-feed-speed-starting-guide\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"display:inline-block; font-size:16px !important; color:#0a66c2 !important; font-weight:600; text-decoration:underline;\"\u003e\n👉 View Carbide Drill Bit Feed \u0026amp; Speed Starting Guide\n\u003c\/a\u003e\n\u003c\/p\u003e\n\n\u003cdiv style=\"background:#f5f5f5; border:1px solid #ddd; padding:14px; margin-top:18px; border-radius:6px;\"\u003e\n  \u003cstrong\u003eNeed individual carbide drill sizes instead?\u003c\/strong\u003e\u003cbr\u003e\n  Browse our\n  \u003ca href=\"https:\/\/drillbitsunlimited.com\/collections\/carbide-drill-bits-choose-your-size-and-quantities\" style=\"color:#0066cc; font-weight:bold; text-decoration:underline;\"\u003e\n    individual carbide drill bit sizes →\n  \u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#f5f5f5; border:1px solid #ddd; padding:14px; margin-top:14px; border-radius:6px;\"\u003e\n  \u003cstrong\u003eLooking for other drill variety sets?\u003c\/strong\u003e\u003cbr\u003e\n  View all\n  \u003ca href=\"https:\/\/drillbitsunlimited.com\/collections\/all-drill-variety-sets\" style=\"color:#0066cc; font-weight:bold; text-decoration:underline;\"\u003e\n    carbide drill variety sets →\n  \u003c\/a\u003e\n\u003c\/div\u003e","brand":"Drill Bits Unlimted","offers":[{"title":"Lightly Used Drills","offer_id":43763327566053,"sku":"S3A-LU","price":29.0,"currency_code":"USD","in_stock":true},{"title":"Resharpened Drills","offer_id":43763327598821,"sku":"S3A-RS","price":44.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/3082\/2885\/files\/s3a-gallery.jpg?v=1780939320","url":"https:\/\/drillbitsunlimited.com\/products\/50pc-carbide-micro-drill-set-78-74-10-each-s3a","provider":"Drill Bits Unlimited","version":"1.0","type":"link"}