{"product_id":"klein-tools-coaxial-flip-impact-socket-set-66040-5-piece-8-sizes-1-2-square-drive-4140-steel-12-point-hardware-installation-kit","title":"Klein Tools Coaxial Flip Impact Socket Set 66040 5 Piece 8 Sizes (1\/2 Square Drive 4140 Steel 12 Point Hardware Installation Kit)","description":"\u003cdiv class=\"product-description\" style=\"font-family: sans-serif; color: #333333; line-height: 1.6; max-width: 900px;\"\u003e\n\u003ch2 style=\"color: #004b87;\"\u003e\u003ca title=\"Link to the Klein Tools homepage.\" href=\"https:\/\/www.1toptools.com\/pages\/klein-tools\"\u003e\u003cimg style=\"display: block; margin-left: auto; margin-right: auto;\" alt=\"Klein promotional logo logout\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2274\/5945\/files\/KleinStacked-Black.png?v=1774018194\"\u003e\u003c\/a\u003e\u003c\/h2\u003e\n\u003ch2 style=\"color: #004b87; font-family: Arial, sans-serif;\"\u003eKlein Tools 66040 5-Piece 2-in-1 Coaxial Spring-Loaded 12-Point Impact Socket Set\u003c\/h2\u003e\n\u003cp\u003eThe Klein Tools 66040 5-Piece 2-in-1 Impact Socket Set delivers eight primary SAE sizes across four coaxial, spring-loaded socket bodies and a 1\/4 inch hex to 1\/2 inch square drive adapter for fast hardware installation. Forged from high-strength 4140 alloy steel, this 2.3 lb kit complies with ASME B107.2 impact standards and features a 12-point socket geometry that eases alignment onto hex and square fasteners. Designed for electrical utility contractors, commercial electricians, and structural ironworkers, the hands-free spring-loaded socket mechanism lets operators press inner socket sleeves directly over fasteners to instantly switch drive dimensions across eight core sizes ranging from 3\/8 inch to 7\/8 inch without removing sockets from power tool anvils.\u003c\/p\u003e\n\u003ch3 style=\"color: #004b87;\"\u003eBest Used For:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverhead Utility \u0026amp; Trapeze Bolting:\u003c\/strong\u003e Running strut channel nuts, threaded rod hardware, and utility pole fasteners without stopping to detach or manually flip socket drive bodies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare \u0026amp; Hex Fastener Installation:\u003c\/strong\u003e Rapidly engaging both 6-point hex bolts and 4-point square hardware using precision-machined 12-point socket profiles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpact Wrench \u0026amp; Driver Adaptation:\u003c\/strong\u003e Connecting directly to 1\/2 inch square drive impact wrenches (such as the Klein BAT20CW1) or converting 1\/4 inch power hex impact drivers via the included adapter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color: #004b87;\"\u003eKey Performance \u0026amp; Safety Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHands-Free Coaxial Spring-Loaded Action:\u003c\/strong\u003e Inner spring-loaded socket automatically retracts when pushed against larger hardware, giving instant 2-in-1 size functionality on single drive heads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8 Sizes Consolidated in 4 Sockets:\u003c\/strong\u003e Combines 7\/8 x 11\/16'', 3\/4 x 9\/16'', 5\/8 x 7\/16'', and 1\/2 x 3\/8'' SAE dimensions into four lightweight socket bodies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-Point High-Torque Socket Geometry:\u003c\/strong\u003e Provides double the positioning angles of 6-point sockets for easier alignment on both hex and square fastener heads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForged 4140 Alloy Steel Construction:\u003c\/strong\u003e Heat-treated impact-grade metallurgy meets ASME B107.2 specifications to absorb heavy rotational shock loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-Hole Pin Retention System:\u003c\/strong\u003e Engineered cross-hole detent lock prevents unintentional separation between the drive adapter and socket bodies under continuous vibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor-Coded Visual Identification:\u003c\/strong\u003e Distinctive colored rings permit rapid visual size selection inside dark utility truck bins and jobsite tool bags.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color: #004b87;\"\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e(1) 7\/8-Inch x 11\/16-Inch Coaxial Spring-Loaded 12-Point Impact Socket\u003c\/li\u003e\n\u003cli\u003e(1) 3\/4-Inch x 9\/16-Inch Coaxial Spring-Loaded 12-Point Impact Socket\u003c\/li\u003e\n\u003cli\u003e(1) 5\/8-Inch x 7\/16-Inch Coaxial Spring-Loaded 12-Point Impact Socket\u003c\/li\u003e\n\u003cli\u003e(1) 1\/2-Inch x 3\/8-Inch Coaxial Spring-Loaded 12-Point Impact Socket\u003c\/li\u003e\n\u003cli\u003e(1) 1\/4-Inch Hex Shank to 1\/2-Inch Square Drive Impact Adapter\u003c\/li\u003e\n\u003cli\u003e(1) Hard-Shell Storage Carrying Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ciframe width=\"1042\" height=\"586\" src=\"https:\/\/www.youtube.com\/embed\/dvwBhL-0b9w\" title=\"2-in-1 Impact Socket Sets (Cat. No. 66040\/66050E)\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch3 style=\"color: #004b87;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-family: Arial, sans-serif;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #fff5f7;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eBrand Manufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003eKlein Tools®\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eModel Part Number OEM SKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e66040\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fff5f7;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eTool Classification System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e5-Piece Coaxial Spring-Loaded 2-in-1 Impact Socket Set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eCore Metallurgy Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003eForged Heat-Treated 4140 Alloy Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fff5f7;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eInput Drive Interface Sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e1\/2 inch Female Square Drive \u0026amp; 1\/4 inch Hex Power Shank Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eSocket Size Range (SAE)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e7\/8 x 11\/16'', 3\/4 x 9\/16'', 5\/8 x 7\/16'', 1\/2 x 3\/8''\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fff5f7;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eSocket Point Profile Geometry\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e12-Point Deep Well Profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eFastener Safety Retention\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003eCross-Hole Adapter Retention Alignment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fff5f7;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eManufacturing Quality Standards\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003eASME B107.2 Compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003ePower Driver Tool Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e1\/2 inch Impact Wrenches (BAT20CW1) \u0026amp; 1\/4 inch Impact Drivers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fff5f7;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eOverall Carrying Case Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e5.5 inches L x 4.7 inches W x 1.9 inches H (14.0 x 11.9 x 4.8 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eHigh-Voltage Insulated Frame\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003eNo (Uninsulated - do not use on energized electrical circuits)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fff5f7;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eTotal Piece Count\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e5 Pieces (4 Sockets + 1 Adapter + Case)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eAssembled Net Package Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e2.3 lb (1.0 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fff5f7;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eGlobal Trade Item Number GTIN\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e00092644382093\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"margin-top: 20px; padding: 10px; background-color: #f9f9f9; border-left: 4px solid #004b87;\"\u003e\u003cstrong\u003ePro-Tip:\u003c\/strong\u003e When engaging smaller inner hex nuts, push the power impact driver firmly forward. The coaxial outer socket sleeve stays suspended above the work surface while the internal spring-loaded socket seats fully over the fastener head, allowing hands-free size transitions without removing the socket from the anvil.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"KLEIN TOOLS","offers":[{"title":"Default Title","offer_id":52728917131575,"sku":"66040","price":134.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2274\/5945\/files\/Klein_Tools_Coaxial_Flip_Impact_Socket_Set_66040_5_Piece_8_Sizes_1_2_Square_Drive_4140_Steel_12_Point_Hardware_Installation_Kit.jpg?v=1785162808","url":"https:\/\/www.1toptools.com\/products\/klein-tools-coaxial-flip-impact-socket-set-66040-5-piece-8-sizes-1-2-square-drive-4140-steel-12-point-hardware-installation-kit","provider":"1 Top Tools","version":"1.0","type":"link"}