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The Master Lock 379ATPY universal trailer hitch coupler lock fits three common coupler sizes (48mm, 51mm, 59mm) and features an advanced locking mechanism that resists picking and prying. Constructed from durable zinc to prevent rust and corrosion, it’s designed for vehicles, trailers, and RVs. This compact, portable lock includes two keys and is backed by a Limited Lifetime Warranty from a trusted industry leader.






















| ASIN | B000L9QRE8 |
| Additional Features | Portable |
| Best Sellers Rank | #2,630 in Automotive ( See Top 100 in Automotive ) #8 in Towing Hitch Locks |
| Brand Name | Master Lock |
| Color | Black |
| Control Method | Touch |
| Controller Type | Hand Control |
| Customer Reviews | 4.6 4.6 out of 5 stars (5,979) |
| Finish Types | Polished |
| Global Trade Identification Number | 00071649229220 |
| Included Components | Unit^Instruction Guide |
| Item Dimensions | 5.1 x 3.5 x 4.6 inches |
| Item Type Name | Universal Trailer Hitch Lock |
| Item Weight | 16 ounces |
| Lock Type | Key Lock |
| Manufacturer | Master Lock |
| Manufacturer Part Number | 379ATPY |
| Manufacturer Warranty Description | 1 year manufacturer |
| Material Type | Zinc |
| Model Name | Universal Towing Coupler Lock, Steel |
| Model Number | 379ATPY |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Recommended Uses For Product | vehicles, trailers, RVs |
| Shape | Rectangular |
| Style Name | Trailer Hitch Lock |
| UPC | 071649229220 |
| Unit Count | 1 Count |
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