{"product_id":"master-lock-keyed-alike-universal-trailer-coupler-locks-379ka-6-six","title":"Master Lock Keyed Alike Universal Trailer Coupler Locks 379KA-6 - Six","description":"\u003cp\u003eIn this review the Master Lock 379KA-6 six pack is judged on convenience and security for owners who need multiple trailer locks that operate with a single key. The bottom line: this set is for someone managing several trailers, carts or equipment who values fast, keyed-alike access and a stout, simple design that resists common blunt-force attacks. Each lock ships with two keys, and the set's keyed-alike feature makes daily use and key management noticeably easier than juggling different locks.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix locks keyed alike:\u003c\/strong\u003e All six locks open with the same key, removing the need to carry multiple keys when using several trailers or attachments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo keys per lock:\u003c\/strong\u003e Each lock includes two keys so the six pack supplies a total of twelve keys for shared access or backups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal fit:\u003c\/strong\u003e The design fits 1-7\/8 in, 2 in and most 2-5\/16 in couplers from common manufacturers, covering a wide range of trailer tongues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSturdy zinc alloy body:\u003c\/strong\u003e Reinforced zinc die-cast construction resists rust and offers impact resistance better than many lighter materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-blunt force design:\u003c\/strong\u003e When locked the body rests on top of the coupler and can rotate slightly, making downward hammer strikes and sledge attacks harder to execute.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRekeyable cylinder:\u003c\/strong\u003e The lock uses an advanced cylinder that resists picking and can be rekeyed if desired for long-term convenience.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis pack suits fleet owners, contractors, or recreational users who manage multiple trailers, boats or equipment and want the convenience of a single key for all coupler locks. It is especially useful when trailers are stored unattended or left at a jobsite where basic theft deterrence is needed.\u003c\/p\u003e\n\u003cp\u003eIt is less appropriate for someone who needs custom master keying across separate orders, since ordering multiple six-packs will not automatically produce the same key code. Buyers seeking ultra-high security hardened steel couplers or electronic locks should look elsewhere.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKeyed-alike convenience reduces key clutter and speeds hookup for multiple trailers.\u003c\/li\u003e\n\u003cli\u003eTwo keys per lock provide immediate backups or spare distribution.\u003c\/li\u003e\n\u003cli\u003eDesign and zinc die-cast body resist corrosion and blunt-force attacks better than lightweight alternatives.\u003c\/li\u003e\n\u003cli\u003eUniversal fit covers the most common coupler sizes and many major manufacturers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOrdering multiple six-packs does not guarantee identical keys unless purchased keyed alike through the merchant, which adds complexity for larger fleets.\u003c\/li\u003e\n\u003cli\u003eSome customers report mixed impressions of build toughness, so extreme heavy-duty environments may require a different lock type.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage contents\u003c\/td\u003e\n\u003ctd\u003eSix keyed-alike coupler locks with two keys each (12 keys)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible coupler sizes\u003c\/td\u003e\n\u003ctd\u003e1-7\/8 in, 2 in, and most 2-5\/16 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eReinforced zinc die-cast body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLock type\u003c\/td\u003e\n\u003ctd\u003eRekeyable keyed-alike cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight per lock\u003c\/td\u003e\n\u003ctd\u003eApproximately 2.4 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eLimited lifetime warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Master Lock 379KA-6 six pack is a practical, good-value solution for anyone who needs multiple trailer coupler locks that work with a single key. It balances convenience and basic theft deterrence through a universal fit, solid zinc construction and an anti-blunt-force design, making it a strong choice for fleet managers and recreational users, provided they confirm keyed-alike ordering for larger quantities.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill the same key open all six locks?\u003c\/strong\u003e\u003cbr\u003eYes, the six-pack ships keyed alike so one key opens all six locks out of the box.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo these locks fit my coupler?\u003c\/strong\u003e\u003cbr\u003eThey are made to fit 1-7\/8 in, 2 in and most 2-5\/16 in couplers from many common manufacturers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I get more locks keyed the same?\u003c\/strong\u003e\u003cbr\u003eOrdering multiple six-packs does not guarantee identical keys automatically; contact the merchant for larger keyed-alike orders.\u003c\/p\u003e","brand":"Master Lock","offers":[{"title":"Default Title","offer_id":48226286928091,"sku":"B07SSWR8JG","price":214.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61O19uDyaNL._AC_SL1112.jpg?v=1770905489","url":"https:\/\/gearmusthave.com\/products\/master-lock-keyed-alike-universal-trailer-coupler-locks-379ka-6-six","provider":"GearMustHave","version":"1.0","type":"link"}