{"product_id":"18-x-12-cobalt-aircraft-extension-drill-bit_glbcox1218","title":"#18 X 12\" Aircraft Extension Drill Bit | Cobalt | GLBCOX1218","description":"\u003cdiv\u003e\n\u003cdiv\u003e\u003cstrong\u003eSpecs\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e \u003cli\u003eDiameter: #18\u003c\/li\u003e \u003cli\u003eOverall length: 12\" (304.8 mm)\u003c\/li\u003e \u003cli\u003eMaterial: Cobalt alloy steel (high-hardness, heat-resistant HSS variant)\u003c\/li\u003e \u003cli\u003eType: Aircraft extension twist drill bit\u003c\/li\u003e \u003cli\u003eQuantity: 1 piece\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e \u003cli\u003eLong-reach 12\" extension enables access to deep or recessed holes in tight spaces common in aircraft maintenance, automotive work, and industrial fabrication\u003c\/li\u003e \u003cli\u003eCobalt alloy construction provides greater hardness and heat resistance than standard HSS, improving wear life when drilling through tougher metals (e.g., stainless steel, alloy steels)\u003c\/li\u003e \u003cli\u003eDesigned for repeated high-temperature drilling, reducing edge dulling during prolonged use\u003c\/li\u003e \u003cli\u003eSpecifically suited for metalworking tasks that require precise hole placement in constrained layouts\u003c\/li\u003e \u003cli\u003eNot intended for wood, masonry, or composites\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv\u003e\u003cstrong\u003ePhysical\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e \u003cli\u003eLength: 12\" extension\u003c\/li\u003e \u003cli\u003eDiameter: #18\u003c\/li\u003e \u003cli\u003eMaterial: Cobalt alloy steel\u003c\/li\u003e \u003cli\u003eShape: Twist drill with extension reach\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Drill America","offers":[{"title":"Default Title","offer_id":52312479236375,"sku":"GLBCOX1218","price":9.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/GLBCOX121-16_fc7bf8c7-f155-4b2f-8328-ee98d21ff7e2.jpg?v=1771708129","url":"https:\/\/mutualscrew.com\/products\/18-x-12-cobalt-aircraft-extension-drill-bit_glbcox1218","provider":"Mutual Screw \u0026 Supply","version":"1.0","type":"link"}