{"product_id":"klein-tools-metric-impact-flip-socket-set-651mqs-2-piece-quad-4-1-4-inch-drive-4-in-1-metric-spring-loaded-steel-hex-fastening-adapter","title":"Klein Tools Metric Impact Flip Socket Set 651MQS 2 Piece Quad 4 (1\/4 Inch Drive 4 in 1 Metric Spring Loaded Steel Hex Fastening Adapter)","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 651MQS Quad-4 Metric 4-in-1 Coaxial Heavy-Duty Impact Flip Socket Set\u003c\/h2\u003e\n\u003cp\u003eThe Klein Tools 651MQS Quad-4 Metric Impact Flip Socket Set provides a compact power driving extension engineered to combine four primary metric hex dimensions into a single dual-ended socket body paired with a 1\/4-inch drive adapter shaft. Forged from heat-treated cold-forged steel with a black manganese phosphate protective surface coating, this 14 oz (0.88 lb) impact-rated assembly measures 4.19 inches high by 0.67 inches wide and integrates internal spring-loaded coaxial socket sleeves across 7 mm, 8 mm, 10 mm, and 12 mm hex sizes. Built to endure severe rotational torque and impact vibration, this system allows electricians, automotive mechanics, and panel builders to compress socket walls directly over bolt heads for immediate hands-free size switching without removing the tool from long threaded studs or tight electrical enclosures.\u003c\/p\u003e\n\u003ch3 style=\"color: #004b87;\"\u003eBest Used For:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetric Terminal \u0026amp; Control Panel Bolting:\u003c\/strong\u003e Servicing electrical enclosures, relays, and terminal strips featuring 7 mm, 8 mm, 10 mm, and 12 mm metric hex hardware without swapping individual socket units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Threaded Shaft Fastening:\u003c\/strong\u003e Reaching nuts buried deep along threaded studs in narrow junction bays utilizing a deep-well coaxial socket profile.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpact Driver \u0026amp; Shaft Extension Integration:\u003c\/strong\u003e Mounting directly onto 1\/4-inch quick-connect impact drivers or 1\/4-inch square drive anvils for rapid power driving.\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\u003e4-in-1 Quad-4 Coaxial Metric Socket:\u003c\/strong\u003e Houses 7 mm, 8 mm, 10 mm, and 12 mm metric hex sizes within a single dual-ended reversible socket body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHands-Free Spring-Loaded Action:\u003c\/strong\u003e Coaxial inner sleeve retracts automatically under forward pressure, granting instant access to larger hex dimensions without stopping for manual adjustments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat-Treated Cold-Forged Steel Construction:\u003c\/strong\u003e High-grade metallurgy withstands intense rotational impact shock loads without cracking drive walls or rounding fastener flats.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack Manganese Phosphate Coating:\u003c\/strong\u003e Industrial protective surface finish prevents corrosion, rust, and chemical damage from jobsite exposure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry-Standard Color-Coded Bands:\u003c\/strong\u003e Vibrant painted identification rings permit rapid visual size recognition inside dark work areas or cluttered tool pouches.\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) Klein Tools Quad-4 Coaxial Reversible 4-in-1 Heavy-Duty Metric Impact Flip Socket (7mm, 8mm, 10mm, 12mm)\u003c\/li\u003e\n\u003cli\u003e(1) 3-1\/2-Inch Extended 1\/4-Inch Drive Shaft Adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ciframe width=\"1042\" height=\"586\" src=\"https:\/\/www.youtube.com\/embed\/D1E4Qiv1GNE\" title=\"How A Quad Socket Works (651QS, 652QS, 653QS, 654QS and 656QS)\"\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;\"\u003e651MQS\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;\"\u003eQuad-4 4-in-1 Coaxial Metric Impact Flip 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;\"\u003eHeat-Treated Cold-Forged 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\u003eSurface Protective Finish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003eBlack Manganese Phosphate Corrosion-Resistant Finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003ePrimary Input Drive Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e1\/4 inch Drive (Includes 3-1\/2 inch Shaft Adapter)\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\u003eIntegrated Metric Socket Sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e7 mm, 8 mm, 10 mm, and 12 mm Hex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\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;\"\u003e6-Point Deep Well Profile\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\u003eFastener Transition Action\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003eHands-Free Coaxial Spring-Loaded Compression \u0026amp; Reversible Flip Body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eVisual Identification System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003eColor-Coded Painted Rings\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 Unit Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e4.19 inches (10.6 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eOverall Unit Width \u0026amp; Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e0.67 inches W x 0.67 inches L (1.7 cm x 1.7 cm)\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\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\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;\"\u003e2 Pieces (1 Quad Socket + 1 Extension Shaft)\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\u003eNet Product Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #e0e0e0;\"\u003e14.0 oz \/ 0.88 lb (397 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\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;\"\u003e00092644380150\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 To drive 7 mm or 10 mm hardware, press the tool end firmly onto the bolt head so the internal spring compresses completely. To engage 8 mm or 12 mm hardware, simply relieve forward pressure or flip the socket sleeve around to utilize the outer socket wall profile directly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"KLEIN TOOLS","offers":[{"title":"Default Title","offer_id":52729512526135,"sku":"651MQS","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2274\/5945\/files\/Klein_Tools_Metric_Impact_Flip_Socket_Set_651MQS_2_Piece_Quad_4_1_4_Inch_Drive_4_in_1_Metric_Spring_Loaded_Steel_Hex_Fastening_Adapter.jpg?v=1785170207","url":"https:\/\/www.1toptools.com\/products\/klein-tools-metric-impact-flip-socket-set-651mqs-2-piece-quad-4-1-4-inch-drive-4-in-1-metric-spring-loaded-steel-hex-fastening-adapter","provider":"1 Top Tools","version":"1.0","type":"link"}