{"product_id":"21-x-12-cobalt-aircraft-extension-drill-bit_glbcox1221","title":"#21 X 12\" Aircraft Extension Drill Bit | Cobalt | GLBCOX1221","description":"\u003cdiv\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eQuantity: 1 piece\u003c\/li\u003e \u003cli\u003eSize: #21\u003c\/li\u003e \u003cli\u003eOverall length: 12 in\u003c\/li\u003e \u003cli\u003eMaterial: Cobalt alloy\u003c\/li\u003e \u003cli\u003eType: Extension drill bit designed for deep-hole applications\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eCobalt alloy provides enhanced wear and heat resistance for drilling through tougher metals compared with standard HSS bits\u003c\/li\u003e \u003cli\u003e12\" extension length enables access to deep holes in confined spaces such as engine bays, chassis, and aerospace components\u003c\/li\u003e \u003cli\u003eRigid extension design helps maintain straightness and consistent hole geometry during deep-hole drilling\u003c\/li\u003e \u003cli\u003eIdeal for metal fabrication, maintenance, and repair tasks where depth and material hardness are factors\u003c\/li\u003e \u003cli\u003eSingle-piece delivery simplifies inventory and ensures a ready-to-use long-reach bit when needed\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePhysical\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eLength: 12 inches\u003c\/li\u003e \u003cli\u003eDiameter designation: #21\u003c\/li\u003e \u003cli\u003eConstruction: Cobalt aircraft extension bit (long-reach drill bit for hard metals)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Drill America","offers":[{"title":"Default Title","offer_id":52312479858967,"sku":"GLBCOX1221","price":8.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/GLBCOX121-16_94507824-6211-4bac-807a-a7a187a8b6e6.jpg?v=1771708136","url":"https:\/\/mutualscrew.com\/products\/21-x-12-cobalt-aircraft-extension-drill-bit_glbcox1221","provider":"Mutual Screw \u0026 Supply","version":"1.0","type":"link"}