{"product_id":"proven-industries-model-400xl-puck-lock-set-pack-of-3-heavy-duty","title":"Proven Industries Model 400XL Puck-Lock Set Pack of 3 - Heavy-Duty","description":"\u003cp\u003eIn this review of the Proven Industries Model 400XL puck-lock set, the bottom line is simple: these locks are built for trailer owners who want rugged, pick-resistant security without the fuss. The pack of three bright blue puck locks is designed to protect rear and side enclosed trailer doors, and the single biggest reason to buy is the combination of a fully shielded shackle and aircraft-grade 6061 aluminum body that resists cutting, corrosion, and tampering. This review looks at fit, build quality, and everyday usability so you can decide if they suit your needs.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty design:\u003c\/strong\u003e The puck-style bodies and fully shielded shackles reduce exposed metal that would be vulnerable to bolt cutters or pry tools, increasing physical resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAircraft-grade construction:\u003c\/strong\u003e Made from 6061 solid aluminum, the cylinders resist corrosion for outdoor trailer use and feel robust in the hand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePick-resistant key system:\u003c\/strong\u003e A unique key profile deters easy duplication and is intended to make lockpicking more difficult for opportunistic thieves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeyed alike convenience:\u003c\/strong\u003e Each lock ships with two keys and all three locks in the pack are keyed alike, so one key operates every lock in the set.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenerous shackle opening:\u003c\/strong\u003e The back opening is large enough to accommodate swivel hasps commonly found on enclosed trailer doors, easing installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThese puck locks are best for trailer owners, contractors, or hobbyists who need a dependable, weather-resistant locking solution for enclosed trailers, tool haulers, or storage boxes. The focus here is on physical strength and deterrence rather than electronic features or convenience extras.\u003c\/p\u003e\n\u003cp\u003eUsers who prioritize ultra-smooth daily operation or who require specialized key control systems (restricted keyways with registered blanks) should consider alternatives; some buyers report mixed experiences with unlocking ease, so those who need a buttery-smooth cylinder every time may want to test one before committing to a multi-pack.\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\u003eSolid, corrosion-resistant 6061 aluminum construction provides a durable outer shell.\u003c\/li\u003e\n\u003cli\u003eHidden, fully shielded shackle reduces attack points for bolt cutters and prying.\u003c\/li\u003e\n\u003cli\u003eAll locks keyed alike with two keys each simplifies key management for multiple locks.\u003c\/li\u003e\n\u003cli\u003eSleek design and fit for common trailer latch hardware make installation straightforward.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSome users report occasional difficulty turning the lock; the cylinder can feel stiff until it breaks in.\u003c\/li\u003e\n\u003cli\u003eColor is limited to blue in this pack, which may not match every trailer aesthetic.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eProven Industries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e400XL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAircraft-grade 6061 solid aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShackle opening\u003c\/td\u003e\n\u003ctd\u003e1 3\/4' L x 1 3\/4' W x 7\/8' H; depth 1 1\/4'\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack quantity\u003c\/td\u003e\n\u003ctd\u003e3 locks, keyed alike\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKeys\u003c\/td\u003e\n\u003ctd\u003e2 keys per lock with unique key design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMade in\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Proven Industries Model 400XL puck-lock set is a practical, value-oriented choice for trailer owners who want tougher physical protection and weather resistance. Its aircraft-grade aluminum body and shielded shackle make it a strong deterrent against common theft tools, and the keyed-alike convenience is helpful for multiple locks. It represents good value for anyone prioritizing durable mechanical security over electronic features.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre the locks weather resistant?\u003c\/strong\u003e\u003cbr\u003eYes, the 6061 aluminum construction and shielded design help resist corrosion and perform well outdoors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo all three locks use the same key?\u003c\/strong\u003e\u003cbr\u003eYes, the pack is keyed alike and each lock includes two keys for convenience.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill these fit standard trailer swivel hasps?\u003c\/strong\u003e\u003cbr\u003eYes, the large back opening and specified shackle dimensions accommodate common swivel hasps on enclosed trailers.\u003c\/p\u003e","brand":"Proven Industries","offers":[{"title":"Default Title","offer_id":48248557732059,"sku":"B08B1R9BD1","price":178.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61QgGo0GwuL._AC_SL1500.jpg?v=1771102819","url":"https:\/\/gearmusthave.com\/products\/proven-industries-model-400xl-puck-lock-set-pack-of-3-heavy-duty","provider":"GearMustHave","version":"1.0","type":"link"}