--- product_id: 401461794 title: "Master Lock Master Lock - Universal Size Fits 1-7/8inch 2inch and 2-5/16inch Couplers - Trailer Locks #389DAT" brand: "master lock" price: "β‚Ή 13774" currency: INR in_stock: true reviews_count: 5 category: "Master Lock" url: https://www.desertcart.in/products/401461794-master-lock-master-lock-universal-size-fits-1-7-8inch store_origin: IN region: India --- # Advanced pick & pry resistant lock Universal fit for 1-7/8" to 2-5/16" couplers Rust & corrosion resistant alloy steel Master Lock Master Lock - Universal Size Fits 1-7/8inch 2inch and 2-5/16inch Couplers - Trailer Locks #389DAT **Brand:** master lock **Price:** β‚Ή 13774 **Availability:** βœ… In Stock ## Summary > πŸ” Lock in your peace of mind with Master Lock’s ultimate trailer security! ## Quick Answers - **What is this?** Master Lock Master Lock - Universal Size Fits 1-7/8inch 2inch and 2-5/16inch Couplers - Trailer Locks #389DAT by master lock - **How much does it cost?** β‚Ή 13774 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/401461794-master-lock-master-lock-universal-size-fits-1-7-8inch) ## Best For - master lock enthusiasts ## Why This Product - Trusted master lock brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Built to Last:** Durable alloy steel with a bright red finish that resists rust and corrosion. - β€’ **Quick & Simple:** Easy installation and removal so you’re always ready to roll. - β€’ **Fits Like a Glove:** Universal compatibility with the most common trailer coupler sizes. - β€’ **Effortless Control:** Key-operated lock with rekeyable feature for personalized security. - β€’ **Unmatched Security:** Advanced locking mechanism that outsmarts thieves every time. ## Overview The Master Lock #389DAT is a universal trailer coupler lock designed to fit 1-7/8", 2", and 2-5/16" couplers. Crafted from rust-resistant alloy steel with a bright red finish, it features an advanced locking mechanism that resists picking and prying. Rekeyable and key-controlled, it offers easy installation and removal, making it the trusted choice for securing trailers with over 15,000 satisfied users. ## Description ...... ## Features - Coupler Lock,Universal - Bright red finish discourages thief's from messing with your trailer - Advanced locking mechanism resists picking and prying - Resists rust and corrosion; Simple installation and removal ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01MYCT0LG | | Additional Features | Advanced locking mechanism, Resists picking and prying, Rekeyable | | Brand | Master Lock | | Brand Name | Master Lock | | Colour | Red | | Control Method | Touch | | Controller Type | Key Control | | Customer Reviews | 4.7 out of 5 stars 15,962 Reviews | | Global Trade Identification Number | 00071649263019 | | Included Components | Key | | Item Dimensions | 9.1 x 19.3 x 17 Centimeters | | Item Type Name | Automotive Towing | | Item Weight | 1 Pounds | | Item dimensions L x W x H | 9.1 x 19.3 x 17 Centimeters | | Lock Type | Key Lock | | Manufacturer | Master Lock | | Manufacturer Part Number | 389DAT | | Material | Alloy Steel | | Material Type | Alloy Steel | | Model Name | 379ATPY | | Model Number | 379ATPY | | Number of Pieces | 1 | | Product Finish Type | Painted | | Recommended Uses For Product | securing trailers | | Shape | Rectangular | | Smart Home Compatibility | Not Smart Home Compatible | | Special Feature | Advanced locking mechanism, Resists picking and prying, Rekeyable | | Style Name | Modern | | UPC | 071649263019 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Master Lock - **Item dimensions L x W x H:** 3.6 x 7.6 x 6.7 inches - **Lock Type:** Key Lock - **Material:** Alloy Steel - **Special Feature:** Advanced locking mechanism, Resists picking and prying, Rekeyable ## Images ![Master Lock Master Lock - Universal Size Fits 1-7/8inch 2inch and 2-5/16inch Couplers - Trailer Locks #389DAT - Image 1](https://m.media-amazon.com/images/I/51j0ElX2eTL.jpg) ![Master Lock Master Lock - Universal Size Fits 1-7/8inch 2inch and 2-5/16inch Couplers - Trailer Locks #389DAT - Image 2](https://m.media-amazon.com/images/I/61ZBFNGmumL.jpg) ![Master Lock Master Lock - Universal Size Fits 1-7/8inch 2inch and 2-5/16inch Couplers - Trailer Locks #389DAT - Image 3](https://m.media-amazon.com/images/I/71nmXREL0DL.jpg) ## Questions & Answers **Q: Which is better, this or a boot for a trailer?** A: This is pretty good, fits any receiver and is sturdy. I also have a boot, one that clamps on each side of the wheel, so much easier to use than the so called Denver Boot. If someone wants your trailer bad enough locks and boots won't make any difference, but it sure will slow them down. **Q: Are the keys universal or unique to each lock?** A: The keys are unique to the lock. I ordered the 4 pack. The keys for one lock only works on that lock. **Q: How many keys does this come with?** A: That would be two **Q: Will this lock work on a gooseneck trailer 2 5/16 hitch receiver?** A: Yes, it works on mine, and the description of it states the sizes it will fit. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by J***S on 2 March 2026* ### ⭐⭐⭐⭐⭐ Review *by Z***A on 19 March 2026* ### ⭐⭐⭐⭐⭐ Review *by R***E on 27 September 2025* ## Frequently Bought Together - Master Lock - Universal Size Fits 1-7/8", 2", and 2-5/16" Couplers - Trailer Locks #389DAT - CZC AUTO Black Trailer Hitch Coupler Lock, Dia 1/4 Inch, 3/4 Inch Span for Tow Boat RV Truck Car's Coupler (1 Pack, Black) - CARTMAN Heavy Duty Trailer Lock Wheel Clamp, Universal Security Tire Lock, Adjustable Anti Theft Lock for Trailers SUV Boats ATVs Motorcycles Golf Cart --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.in/products/401461794-master-lock-master-lock-universal-size-fits-1-7-8inch](https://www.desertcart.in/products/401461794-master-lock-master-lock-universal-size-fits-1-7-8inch) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-05-07*