{"product_id":"irwin-tools-irwin-63137-cobalt-alloy-steel-fractional-straight-shank-jobber-length-metal-index-drill-bit-set-15-piece","title":"IRWIN 15-Piece Cobalt Alloy Steel Drill Bit Set 63137 Fractional Straight Shank Jobber Length for Drilling Hardened Metal and Abrasive Materials","description":"\u003cdiv style=\"font-family: Arial, sans-serif; color: #333333;\"\u003e\n\u003ch2 style=\"color: #004d99;\"\u003e\u003cb\u003eConquer Hardened Steel: The Cobalt Drill Bit Set for Extreme Metalworking\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp\u003eWhen high-speed steel fails, you need **Cobalt**. This \u003cb\u003eIRWIN 15-Piece Cobalt Alloy Steel Drill Bit Set (63137)\u003c\/b\u003e is engineered with premium M-42 5% Cobalt Alloy Steel, providing **superior abrasive resistance** and high heat tolerance. This makes it the ideal solution for drilling into **hardened steel**, stainless steel, cast iron, and other tough, high-tensile strength materials that quickly destroy standard bits. Whether you're working in fabrication, automotive, or industrial repair, these **Jobber Length** bits deliver unmatched durability and precision.\u003c\/p\u003e\n\u003ch3 style=\"color: #004d99;\"\u003e\u003cb\u003eKey Features for Durability and Precision\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCobalt Alloy Steel:\u003c\/b\u003e Constructed of M-42 5% Cobalt Alloy Steel for exceptional resistance to abrasion and heat when drilling the toughest metals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePrecision Designed Tip:\u003c\/b\u003e Features a \u003cb\u003e135° split-point tip\u003c\/b\u003e that eliminates drill \"walking\" and reduces feed pressure, allowing for easier, more immediate penetration without hardening the workpiece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFaster Chip Ejection:\u003c\/b\u003e Heavy-duty spiral flute design quickly produces and ejects chips, preventing heat buildup and extending tool life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eReduced Torque:\u003c\/b\u003e Shorter cutting lips minimize torque, making it easier to drill smoothly in high-tensile strength materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eComplete Fractional Set:\u003c\/b\u003e Includes 15 of the most common fractional sizes to cover a wide range of job demands.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color: #004d99;\"\u003e\u003cb\u003eWhat's Included\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFifteen (15) Cobalt Alloy Steel Drill Bits: Sizes 1\/16\" through 1\/2\" in 1\/32\" Increments\u003c\/li\u003e\n\u003cli\u003eOne (1) Durable Metal Index Case (for easy organization and protection)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color: #004d99;\"\u003e\u003cb\u003eSpecifications Table\u003c\/b\u003e\u003c\/h3\u003e\n\u003ctable height=\"226\" style=\"width: 48.75%; border-collapse: collapse; margin-bottom: 20px; text-align: left;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003cth style=\"border: 1px solid rgb(221, 221, 221); padding: 8px; width: 30.2326%;\"\u003e\u003cb\u003eMaterial:\u003c\/b\u003e\u003c\/th\u003e\n\u003ctd style=\"border: 1px solid rgb(221, 221, 221); padding: 8px; width: 69.7674%;\"\u003eCobalt Alloy Steel (M-42 5%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid rgb(221, 221, 221); padding: 8px; width: 30.2326%;\"\u003e\u003cb\u003eTip Angle:\u003c\/b\u003e\u003c\/th\u003e\n\u003ctd style=\"border: 1px solid rgb(221, 221, 221); padding: 8px; width: 69.7674%;\"\u003e135-Degree Split Point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003cth style=\"border: 1px solid rgb(221, 221, 221); padding: 8px; width: 30.2326%;\"\u003e\u003cb\u003eShank Type:\u003c\/b\u003e\u003c\/th\u003e\n\u003ctd style=\"border: 1px solid rgb(221, 221, 221); padding: 8px; width: 69.7674%;\"\u003eStraight Shank (Fits keyed or keyless chucks)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid rgb(221, 221, 221); padding: 8px; width: 30.2326%;\"\u003e\u003cb\u003eBit Style:\u003c\/b\u003e\u003c\/th\u003e\n\u003ctd style=\"border: 1px solid rgb(221, 221, 221); padding: 8px; width: 69.7674%;\"\u003eJobber Length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003cth style=\"border: 1px solid rgb(221, 221, 221); padding: 8px; width: 30.2326%;\"\u003e\u003cb\u003eSize Range:\u003c\/b\u003e\u003c\/th\u003e\n\u003ctd style=\"border: 1px solid rgb(221, 221, 221); padding: 8px; width: 69.7674%;\"\u003e1\/16\" to 1\/2\" (Fractional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid rgb(221, 221, 221); padding: 8px; width: 30.2326%;\"\u003e\u003cb\u003eCase Included:\u003c\/b\u003e\u003c\/th\u003e\n\u003ctd style=\"border: 1px solid rgb(221, 221, 221); padding: 8px; width: 69.7674%;\"\u003eMetal Index Case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eTo power these superior bits through the toughest concrete and hardened masonry, you need a hammer that can keep up. Upgrade your drilling capability by adding the powerful **DEWALT** \u003ca href=\"https:\/\/www.1toptools.com\/products\/dewalt-sds-rotary-hammer-drill-vibration-control-shocks-corded-d25263k\" style=\"color: #e57300; text-decoration: none;\" target=\"_blank\"\u003e\u003cb\u003e1-1\/8\" Handle SDS Rotary Hammer Kit (D25263K)\u003c\/b\u003e\u003c\/a\u003e to your arsenal—it delivers 3.0 Joules of impact energy with anti-vibration control.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"IRWIN","offers":[{"title":"Default Title","offer_id":51223613210935,"sku":"63137ZR","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2274\/5945\/files\/IRWIN_15-Piece_Cobalt_Alloy_Steel_Drill_Bit_Set_63137_Fractional_Straight_Shank_Jobber_Length_for_Drilling_Hardened_Metal_and_Abrasive_Materials.jpg?v=1762193938","url":"https:\/\/www.1toptools.com\/products\/irwin-tools-irwin-63137-cobalt-alloy-steel-fractional-straight-shank-jobber-length-metal-index-drill-bit-set-15-piece","provider":"1 Top Tools","version":"1.0","type":"link"}