{"product_id":"open-end-wrench-double-head-spanner-metric-carbon-steel","title":"6-46mm Open End Wrenches Double Head Spanner Wrench Spanners Metric Carbon Steel","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eOpen End Wrench Double Head Spanner — Metric Carbon Steel for Every Fastener Size\u003c\/h2\u003e\n\u003cp\u003eWhen a bolt is buried deep in an engine bay, a cabinet frame, or a plumbing chase and a socket simply won't fit, a double-head open end wrench is the tool that gets the job done. DIYers, home mechanics, and workshop hobbyists who work across a wide range of metric fasteners need a spanner that grips cleanly, transfers torque without slipping, and holds up to repeated use without corroding in a damp toolbox.\u003c\/p\u003e\n\u003cp\u003eThese open end wrenches are forged from carbon steel and finished with a corrosion-resistant coating. Each wrench features two open ends sized to span adjacent metric fastener sizes, covering a continuous range from 5.5 mm to 46 mm (approximately 0.22 in to 1.81 in). Available in 22 size variants and in single or two-piece quantities, they let you build out your metric wrench set incrementally or stock a spare for a second workstation.\u003c\/p\u003e\n\u003cp\u003eReach for these double-head spanners when adjusting bicycle components, tightening metric bolts on automotive brackets, assembling flat-pack furniture with exposed hex fasteners, or maintaining garden and power equipment. The open-end profile also makes them the right choice for turning flare nuts on brake and fuel lines where a box-end wrench cannot be slipped over the tubing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔧\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits standard metric hex fasteners (bolts, nuts, flare nuts) from 5.5 mm to 46 mm. Not intended for SAE\/imperial or Torx fasteners.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These Open End Wrenches\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cstrong\u003eDouble-Head Design\u003c\/strong\u003e\n\u003cp\u003eEach wrench carries two open ends sized to adjacent metric dimensions, so one tool covers two fastener sizes and reduces the number of wrenches you need to carry.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eCarbon Steel Construction\u003c\/strong\u003e\n\u003cp\u003eForged carbon steel provides the rigidity needed to apply firm torque on stubborn fasteners without flexing or deforming under load.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cstrong\u003eCorrosion-Resistant Finish\u003c\/strong\u003e\n\u003cp\u003eA protective surface treatment resists rust and oxidation, keeping the wrench serviceable in humid garages, outdoor sheds, and marine-adjacent environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003eWide Metric Size Range\u003c\/strong\u003e\n\u003cp\u003e22 size options span 5.5 mm through 46 mm, covering the most common metric bolt and nut sizes found on vehicles, appliances, bicycles, and machinery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🤝\u003c\/span\u003e\u003cstrong\u003eOpen-End Profile for Tight Access\u003c\/strong\u003e\n\u003cp\u003eThe open jaw slides onto a fastener from the side, making it usable in confined spaces and on flare nuts where a closed-end or socket tool cannot be positioned.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cstrong\u003eSingle or Two-Piece Quantity Options\u003c\/strong\u003e\n\u003cp\u003eOrder one piece to fill a gap in your existing set, or choose the two-piece option to keep a backup at a second workstation or share with a co-worker.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Open End Wrench\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTool Type\u003c\/th\u003e\n\u003ctd\u003eDouble-Head Open End Wrench (Spanner)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eCarbon Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eCorrosion-resistant surface treatment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Range\u003c\/th\u003e\n\u003ctd\u003e5.5 mm – 46 mm (approx. 0.22 in – 1.81 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHead Configuration\u003c\/th\u003e\n\u003ctd\u003eDouble open end, two metric sizes per wrench\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMeasurement Standard\u003c\/th\u003e\n\u003ctd\u003eMetric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Sizes\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 Pcs or 2 Pcs (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right size open end wrench for my fastener?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the distance across the flats of the bolt head or nut with a caliper or ruler — that measurement in millimeters is the wrench size you need. Each wrench in this range covers two adjacent sizes (for example, 10–12 mm), so one tool handles both fastener dimensions. If you are unsure, select the next size up and work down until the jaw fits snugly without play.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these wrenches strong enough for automotive use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eCarbon steel open end wrenches are suitable for general automotive maintenance tasks such as tightening bracket bolts, adjusting suspension components, and working on engine accessories. For high-torque applications such as wheel lug nuts or crankshaft bolts, a torque wrench or breaker bar with a socket is the more appropriate tool. Always apply force in a controlled manner to avoid rounding fastener flats.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill the finish protect against rust in a damp environment?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe corrosion-resistant surface treatment provides meaningful protection against light moisture exposure — typical of a garage or outdoor shed. For long-term storage in high-humidity or salt-air environments, wiping the wrench with a light machine oil after use will extend the finish life and prevent surface oxidation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these on SAE (imperial) fasteners?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese wrenches are sized in metric millimeters and are designed for metric fasteners. While a metric jaw may physically fit over a similarly sized SAE fastener, the fit will not be precise and risks rounding the fastener flats. For SAE fasteners, use a wrench set sized in fractional inches.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the 1 Pcs and 2 Pcs options?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe 1 Pcs option ships a single wrench in your chosen size. The 2 Pcs option ships two identical wrenches — useful if you want a spare for a second toolbox, need to lend one to a co-worker, or are stocking a shared workshop where tools frequently walk away. Pricing per piece is reflected in the variant price shown on the product page.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these wrenches compatible with flare nuts on brake or fuel lines?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAn open-end wrench can be used on flare nuts when a dedicated flare nut (crow's foot) wrench is not available, since the open jaw can be positioned over the tubing. However, for critical brake and fuel line work, a proper flare nut wrench that wraps more of the nut's perimeter is recommended to reduce the risk of rounding the soft brass or steel fitting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I confirm which size I need before ordering?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eCheck the fastener markings on the bolt head (metric bolts often stamp the size or grade on the head), or use a digital caliper to measure across the flats. The variant selector on this page lists all available size ranges — choose the range that includes your measured fastener size. If you need help confirming compatibility, contact us before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Size and Amount above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"5.5-7 mm \/ 1 Pcs","offer_id":52378141655314,"sku":"GYZKJGLBZSJ039912x1","price":4.12,"currency_code":"USD","in_stock":true},{"title":"6-7 mm \/ 1 Pcs","offer_id":52378141688082,"sku":"GYZKJGLBZSJ039892x1","price":4.66,"currency_code":"USD","in_stock":true},{"title":"8-10 mm \/ 1 Pcs","offer_id":52378141720850,"sku":"GYZKJGLBZSJ039893x1","price":5.77,"currency_code":"USD","in_stock":true},{"title":"10-12 mm \/ 1 Pcs","offer_id":52378141753618,"sku":"GYZKJGLBZSJ039908x1","price":6.65,"currency_code":"USD","in_stock":true},{"title":"12-14 mm \/ 1 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