{"product_id":"master-lock-trailer-hitch-and-receiver-lock-combo-heavy-duty","title":"Master Lock Trailer Hitch and Receiver Lock Combo - Heavy-Duty","description":"\u003cp\u003eIn this review the Master Lock combo pack is presented as a practical security upgrade for trailer owners who tow regularly. The set includes a trailer coupler lock that fits 1-7\/8 in, 2 in and most 2-5\/16 in couplers and a swivel head receiver lock with 1\/2 in and 5\/8 in pins, giving coverage for a wide range of hitch setups. The single biggest reason to buy is the combination of physical theft deterrence and weather resistance: the coupler lock resists picking and prying while the receiver lock offers a weather tough seal and a push-to-lock convenience that makes secure towing straightforward.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-size coupler fit:\u003c\/strong\u003e The coupler lock fits 1-7\/8 in, 2 in and most 2-5\/16 in trailer couplers so one lock covers many common trailer tongues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced lock mechanism:\u003c\/strong\u003e The coupler lock uses an advanced mechanism designed to resist picking and prying for improved theft deterrence.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRust-resistant construction:\u003c\/strong\u003e The coupler lock is made from zinc to resist rust and corrosion for longer outdoor life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated hitch pins:\u003c\/strong\u003e The receiver lock pins are sized 1\/2 in and 5\/8 in with ratings appropriate for Class I-IV towing to match common trailer classes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePush-to-lock convenience:\u003c\/strong\u003e The swivel head receiver lock features a push-to-lock mechanism so you can secure the pin quickly and remove the key to confirm it is locked.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeather protection:\u003c\/strong\u003e A snap-on cover and Weather Tough seal keep dirt and moisture out of the keyway for more reliable operation in wet conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis combo is best for vehicle and trailer owners who want straightforward physical security for both coupler and receiver connections, including owners of small utility trailers, campers and many RV setups. It suits users who value ease of use while maintaining a solid deterrent against opportunistic theft.\u003c\/p\u003e\u003cp\u003eIt is less suitable for owners who require an exact custom fit for unusual or nonstandard couplers, or for those who need an integrated alarmed system; some customers reported mixed fit results on certain trailers, so verify fit before depending on it for a niche coupling type.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSolid build quality and corrosion resistance from zinc construction increases longevity outdoors.\u003c\/li\u003e\n\u003cli\u003eReceiver lock offers convenient push-to-lock operation and a rotating head so the key faces forward for easier access.\u003c\/li\u003e\n\u003cli\u003eGood security features: advanced coupler locking mechanism and a four-pin cylinder in the receiver lock reduce picking risk.\u003c\/li\u003e\n\u003cli\u003eWeather Tough seal and snap-on cover protect the keyway from dirt and moisture.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFit may be loose on some trailer couplers; customers reported mixed fit, so trial fit is recommended.\u003c\/li\u003e\n\u003cli\u003eThe package covers common sizes but may not suit rare or proprietary coupler shapes without checking compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded items\u003c\/td\u003e\n\u003ctd\u003eTrailer coupler lock and swivel head receiver lock (1 pack)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoupler fit\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\u003eReceiver pin sizes\u003c\/td\u003e\n\u003ctd\u003e1\/2 in and 5\/8 in swivel head pins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin rating\u003c\/td\u003e\n\u003ctd\u003e1\/2 in rated up to 3,500 lbs; 5\/8 in rated up to 10,000 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eZinc coupler lock; black receiver lock with Weather Tough seal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocking features\u003c\/td\u003e\n\u003ctd\u003eAdvanced coupler mechanism, four-pin cylinder, push-to-lock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe Master Lock trailer hitch and receiver lock combo is a practical, value-oriented choice for most trailer owners who need reliable physical theft deterrence and weather resistance. It pairs a corrosion-resistant coupler lock with a convenient push-to-lock receiver pin that is rated for common towing classes, making it a sensible purchase for everyday towing and storage. Check fit on uncommon couplers, but for the majority of users this combo offers solid build quality and easy operation.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWill the coupler lock fit my trailer?\u003c\/strong\u003e\u003cbr\u003eThe coupler lock fits 1-7\/8 in, 2 in and most 2-5\/16 in couplers; measure your coupler and try a test fit since some customers reported mixed fit results.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the receiver lock resist weather?\u003c\/strong\u003e\u003cbr\u003eThe receiver lock uses a Weather Tough seal and a snap-on cover to keep dirt and moisture out of the keyway for more reliable operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre the receiver pins strong enough for heavy trailers?\u003c\/strong\u003e\u003cbr\u003eThe 1\/2 in pin is rated up to 3,500 lbs for Class I and II; the 5\/8 in pin is rated up to 10,000 lbs for Class III and IV towing.\u003c\/p\u003e","brand":"Master Lock","offers":[{"title":"Default Title","offer_id":48633036079323,"sku":"B0B3F2LX2X","price":53.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/419gxix4JYL._AC_SL1001.jpg?v=1778449242","url":"https:\/\/gearmusthave.com\/products\/master-lock-trailer-hitch-and-receiver-lock-combo-heavy-duty","provider":"GearMustHave","version":"1.0","type":"link"}